@@ -88,7 +88,7 @@ static voidpf win32_build_iowin(HANDLE hFile) {
8888}
8989
9090voidpf  ZCALLBACK  win32_open64_file_func (voidpf  opaque , const  void *  filename , int  mode ) {
91-  const   char *   mode_fopen   =   NULL ;
91+  ( void ) opaque ;
9292 DWORD  dwDesiredAccess ,dwCreationDisposition ,dwShareMode ,dwFlagsAndAttributes  ;
9393 HANDLE  hFile  =  NULL ;
9494
@@ -116,7 +116,7 @@ voidpf ZCALLBACK win32_open64_file_func(voidpf opaque, const void* filename, int
116116
117117
118118voidpf  ZCALLBACK  win32_open64_file_funcA (voidpf  opaque , const  void *  filename , int  mode ) {
119-  const   char *   mode_fopen   =   NULL ;
119+  ( void ) opaque ;
120120 DWORD  dwDesiredAccess ,dwCreationDisposition ,dwShareMode ,dwFlagsAndAttributes  ;
121121 HANDLE  hFile  =  NULL ;
122122
@@ -139,7 +139,7 @@ voidpf ZCALLBACK win32_open64_file_funcA(voidpf opaque, const void* filename, in
139139
140140
141141voidpf  ZCALLBACK  win32_open64_file_funcW (voidpf  opaque , const  void *  filename , int  mode ) {
142-  const   char *   mode_fopen   =   NULL ;
142+  ( void ) opaque ;
143143 DWORD  dwDesiredAccess ,dwCreationDisposition ,dwShareMode ,dwFlagsAndAttributes  ;
144144 HANDLE  hFile  =  NULL ;
145145
@@ -158,7 +158,7 @@ voidpf ZCALLBACK win32_open64_file_funcW(voidpf opaque, const void* filename, in
158158
159159
160160voidpf  ZCALLBACK  win32_open_file_func (voidpf  opaque , const  char *  filename , int  mode ) {
161-  const   char *   mode_fopen   =   NULL ;
161+  ( void ) opaque ;
162162 DWORD  dwDesiredAccess ,dwCreationDisposition ,dwShareMode ,dwFlagsAndAttributes  ;
163163 HANDLE  hFile  =  NULL ;
164164
@@ -186,6 +186,7 @@ voidpf ZCALLBACK win32_open_file_func(voidpf opaque, const char* filename, int m
186186
187187
188188uLong  ZCALLBACK  win32_read_file_func (voidpf  opaque , voidpf  stream , void *  buf ,uLong  size ) {
189+  (void )opaque ;
189190 uLong  ret = 0 ;
190191 HANDLE  hFile  =  NULL ;
191192 if  (stream != NULL )
@@ -207,6 +208,7 @@ uLong ZCALLBACK win32_read_file_func(voidpf opaque, voidpf stream, void* buf,uLo
207208
208209
209210uLong  ZCALLBACK  win32_write_file_func (voidpf  opaque , voidpf  stream , const  void *  buf , uLong  size ) {
211+  (void )opaque ;
210212 uLong  ret = 0 ;
211213 HANDLE  hFile  =  NULL ;
212214 if  (stream != NULL )
@@ -246,6 +248,7 @@ static BOOL MySetFilePointerEx(HANDLE hFile, LARGE_INTEGER pos, LARGE_INTEGER *n
246248}
247249
248250long ZCALLBACK   win32_tell_file_func (voidpf  opaque , voidpf  stream ) {
251+  (void )opaque ;
249252 long  ret = -1 ;
250253 HANDLE  hFile  =  NULL ;
251254 if  (stream != NULL )
@@ -268,6 +271,7 @@ long ZCALLBACK win32_tell_file_func(voidpf opaque, voidpf stream) {
268271}
269272
270273ZPOS64_T  ZCALLBACK  win32_tell64_file_func (voidpf  opaque , voidpf  stream ) {
274+  (void )opaque ;
271275 ZPOS64_T  ret =  (ZPOS64_T )- 1 ;
272276 HANDLE  hFile  =  NULL ;
273277 if  (stream != NULL )
@@ -292,6 +296,7 @@ ZPOS64_T ZCALLBACK win32_tell64_file_func(voidpf opaque, voidpf stream) {
292296
293297
294298long ZCALLBACK   win32_seek_file_func (voidpf  opaque , voidpf  stream , uLong  offset , int  origin ) {
299+  (void )opaque ;
295300 DWORD  dwMoveMethod = 0xFFFFFFFF ;
296301 HANDLE  hFile  =  NULL ;
297302
@@ -329,6 +334,7 @@ long ZCALLBACK win32_seek_file_func(voidpf opaque, voidpf stream, uLong offset,
329334}
330335
331336long ZCALLBACK   win32_seek64_file_func (voidpf  opaque , voidpf  stream , ZPOS64_T  offset , int  origin ) {
337+  (void )opaque ;
332338 DWORD  dwMoveMethod = 0xFFFFFFFF ;
333339 HANDLE  hFile  =  NULL ;
334340 long  ret = -1 ;
@@ -367,6 +373,7 @@ long ZCALLBACK win32_seek64_file_func(voidpf opaque, voidpf stream, ZPOS64_T off
367373}
368374
369375int  ZCALLBACK  win32_close_file_func (voidpf  opaque , voidpf  stream ) {
376+  (void )opaque ;
370377 int  ret = -1 ;
371378
372379 if  (stream != NULL )
@@ -384,6 +391,7 @@ int ZCALLBACK win32_close_file_func(voidpf opaque, voidpf stream) {
384391}
385392
386393int  ZCALLBACK  win32_error_file_func (voidpf  opaque , voidpf  stream ) {
394+  (void )opaque ;
387395 int  ret = -1 ;
388396 if  (stream != NULL )
389397 {
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