Don't try to define __try/__except on non-MSVC systems

They didn't do anything anyway, and can clash with other compilers since they
may be used internally (macros and keywords starting with __ are for compiler
use).

src/sound/except.h

@@ -23,19 +23,6 @@ inline int CheckException(DWORD code)
 	return EXCEPTION_CONTINUE_SEARCH;
 }
 
-
-#else
-
-#ifdef __try
-#undef __try
-#endif
-#define __try
-
-#ifdef __except
-#undef __except
-#endif
-#define __except(a) if (0)
-
 #endif
 
-#endif
+#endif

src/sound/fmodsound.cpp

@@ -3192,8 +3192,8 @@ bool IsFModExPresent()
 {
 #ifdef NO_FMOD
 	return false;
-#elif !defined _WIN32
-	return true;	// on non-Windows we cannot delay load the library so it has to be present.
+#elif !defined _MSC_VER
+	return true;	// on non-MSVC we cannot delay load the library so it has to be present.
 #else
 	static bool cached_result;
 	static bool done = false;

src/sound/mpg123_decoder.cpp

@@ -56,17 +56,18 @@ bool MPG123Decoder::open(FileReader *reader)
 {
     if(!inited)
     {
-		__try
-		{
+#ifdef _MSC_VER
+		__try {
+#endif
 			if(mpg123_init() != MPG123_OK)
 				return false;
 			inited = true;
-		}
-		__except (CheckException(GetExceptionCode()))
-		{
+#ifdef _MSC_VER
+        } __except (CheckException(GetExceptionCode())) {
 			// this means that the delay loaded decoder DLL was not found.
 			return false;
 		}
+#endif
     }
 
     Reader = reader;

src/sound/sndfile_decoder.cpp

@@ -54,8 +54,9 @@ SndFileDecoder::~SndFileDecoder()
 
 bool SndFileDecoder::open(FileReader *reader)
 {
-	__try
-	{
+#ifdef _MSC_VER
+	__try {
+#endif
 		SF_VIRTUAL_IO sfio = { file_get_filelen, file_seek, file_read, file_write, file_tell };
 
 		Reader = reader;
@@ -68,11 +69,11 @@ bool SndFileDecoder::open(FileReader *reader)
 			sf_close(SndFile);
 			SndFile = 0;
 		}
-	}
-	__except (CheckException(GetExceptionCode()))
-	{
+#ifdef _MSC_VER
+	} __except (CheckException(GetExceptionCode())) {
 		// this means that the delay loaded decoder DLL was not found.
 	}
+#endif
     return false;
 }