Silence some warnings

src/apu/Gb_Oscs.h

@@ -57,9 +57,9 @@ class Gb_Env : public Gb_Osc
         Gb_Env() : env_enabled(false), env_delay(0)
         {
         }
+        bool env_enabled;
         int env_delay;
         int volume;
-        bool env_enabled;
 
         void clock_envelope();
         bool write_register(int frame_phase, int reg, int old_data, int data);

src/common/ConfigManager.h

@@ -145,7 +145,7 @@ extern const char *preparedCheatCodes[MAX_CHEATS];
 // allow up to 100 IPS/UPS/PPF patches given on commandline
 #define PATCH_MAX_NUM 100
 extern int patchNum;
-extern char *(patchNames[PATCH_MAX_NUM]); // and so on
+extern char *patchNames[PATCH_MAX_NUM]; // and so on
 
 extern int mouseCounter;
 

src/libretro/UtilRetro.cpp

@@ -137,7 +137,7 @@ static bool utilIsImage(const char* file)
 
 IMAGE_TYPE utilFindType(const char* file)
 {
-    char buffer[2048];
+    //char buffer[2048];
     if (!utilIsImage(file)) // TODO: utilIsArchive() instead?
     {
         return IMAGE_UNKNOWN;
@@ -156,7 +156,7 @@ static int utilGetSize(int size)
 uint8_t *utilLoad(const char *file, bool (*accept)(const char *), uint8_t *data, int &size)
 {
 	FILE *fp = NULL;
-	char *buf = NULL;
+	//char *buf = NULL;
 
 	fp = fopen(file,"rb");
 	if(!fp) return NULL;

src/libretro/libretro.cpp

@@ -587,7 +587,7 @@ static void update_variables(void)
     layerEnable = DISPCNT & layerSettings;
     CPUUpdateRenderBuffers(false);
 
-    unsigned sound_enabled = 0x30F;
+    int sound_enabled = 0x30F;
     strcpy(key, "vbam_sound_x");
     for (unsigned i = 0; i < 6; i++)
     {