fixup sizeof

Signed-off-by: Benn Snyder <benn.snyder@gmail.com>

Author: piedar

fakenect/fakenect.c

@@ -539,8 +539,8 @@ int freenect_init(freenect_context **ctx, freenect_usb_context *usb_ctx)
 
 char *var = getenv("FAKENECT_LOOP");
 if (var) {
-int len = strlen(var);
-char* tmp = malloc((len + 1) * sizeof(char));
+const int len = strlen(var);
+char* tmp = malloc((len + 1) * sizeof(*tmp));
 int i;
 for (i = 0; i < len; i++)
 tmp[i] = tolower(var[i]);