GPU: fix compiling error when -DCUSTOM_PCI_IDS_PATH is used

Author: CarterLi

src/detection/gpu/gpu_pci.c

@@ -10,6 +10,9 @@
 #include "fastfetch_pciids.c.inc"
 #endif
 
+#define FF_STR_INDIR(x) #x
+#define FF_STR(x) FF_STR_INDIR(x)
+
 static const FFstrbuf* loadPciIds()
 {
  static FFstrbuf pciids;
@@ -19,7 +22,7 @@ static const FFstrbuf* loadPciIds()
 
  #ifdef FF_CUSTOM_PCI_IDS_PATH
 
- ffReadFileBuffer(FF_STR(FF_CUSTOM_PCI_IDS_PATH), pciids);
+ ffReadFileBuffer(FF_STR(FF_CUSTOM_PCI_IDS_PATH), &pciids);
 
  #else // FF_CUSTOM_PCI_IDS_PATH