common, GSnull, zzogl-pg, SPU2null: add more safety to some fclose functions. Avoid a bunch of double free and memory corruption.

git-svn-id: http://pcsx2.googlecode.com/svn/trunk@3671 96395faa-99c1-11dd-bbfe-3dabce05a288

common/include/PS2Eext.h

@@ -64,7 +64,10 @@ struct PluginLog
 
     void Close()
     {
-        if (LogFile) fclose(LogFile);
+        if (LogFile) {
+            fclose(LogFile);
+            LogFile = NULL;
+        }
     }
 
     void Write(const char *fmt, ...)
@@ -132,7 +135,10 @@ struct PluginConf
 
     void Close()
     {
-        fclose(ConfFile);
+        if (ConfFile) {
+            fclose(ConfFile);
+            ConfFile = NULL;
+        }
     }
 
     int ReadInt(const std::string& item, int defval)

plugins/GSnull/GS.cpp

@@ -136,7 +136,10 @@ EXPORT_C_(void) GSsetLogDir(const char* dir)
 	s_strLogPath = (dir==NULL) ? "logs/" : dir;
 
 	// Reload the log file after updated the path
-	if (gsLog != NULL) fclose(gsLog);
+	if (gsLog) {
+        fclose(gsLog);
+        gsLog = NULL;
+    }
     OpenLog();
 }
 
@@ -156,7 +159,10 @@ EXPORT_C_(void) GSshutdown()
 	GSCloseWindow();
 
 #ifdef GS_LOG
-	if (gsLog) fclose(gsLog);
+	if (gsLog) {
+        fclose(gsLog);
+        gsLog = NULL;
+    }
 #endif
 }
 

plugins/SPU2null/SPU2.cpp

@@ -141,7 +141,10 @@ EXPORT_C_(void)  SPU2setLogDir(const char* dir)
 	s_strLogPath = (dir==NULL) ? "logs/" : dir;
 
 	// Reload the log file after updated the path
-	if (spu2Log) fclose(spu2Log);
+    if(spu2Log) {
+        fclose(spu2Log);
+        spu2Log = NULL;
+    }
     OpenLog();
 }
 
@@ -209,7 +212,10 @@ EXPORT_C_(void) SPU2shutdown()
 	free(spu2mem);
 	spu2mem = NULL;
 #ifdef SPU2_LOG
-	if (spu2Log) fclose(spu2Log);
+    if(spu2Log) {
+        fclose(spu2Log);
+        spu2Log = NULL;
+    }
 #endif
 }
 

plugins/zzogl-pg/opengl/ZZLog.cpp

@@ -53,7 +53,10 @@ bool Open()
 
 void Close()
 {
-	if (gsLog != NULL) fclose(gsLog);
+	if (gsLog != NULL) {
+        fclose(gsLog);
+        gsLog = NULL;
+    }
 }
 
 void SetDir(const char* dir)
@@ -62,7 +65,7 @@ void SetDir(const char* dir)
 	s_strLogPath = (dir==NULL) ? "logs/" : dir;
 
 	// Reload the log file after updated the path
-	if (gsLog != NULL) fclose(gsLog);
+    Close();
 	Open();
 }