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Force stop WAV rendering if output file exceeds 2GB

--- a/src/ft2_wav_renderer.c

+++ b/src/ft2_wav_renderer.c

@@ -309,6 +309,8 @@

 static int32_t SDLCALL renderWavThread(void *ptr)

 {

+	(void)ptr;

+

 	FILE *f = (FILE *)editor.wavRendererFileHandle;

 	fseek(f, sizeof (wavHeader_t), SEEK_SET);

@@ -322,10 +324,12 @@

 	}

 	uint32_t sampleCounter = 0;

-	bool renderDone = false;

+	bool overflow = false, renderDone = false;

 	uint8_t tickCounter = 4;

 	int64_t tickSampleCounter64 = 0;

+	uint64_t bytesInFile = sizeof (wavHeader_t);

+

 	editor.wavReachedEndFlag = false;

 	while (!renderDone)

 	{

@@ -358,10 +362,23 @@

 			// increase buffer pointer

 			if (WDBitDepth == 16)

+			{

 				ptr8 += remainingTick * sizeof (int16_t);

+				bytesInFile += remainingTick * sizeof (int16_t);

+			}

 			else

+			{

 				ptr8 += remainingTick * sizeof (float);

+				bytesInFile += remainingTick * sizeof (float);

+			}

+			if (bytesInFile >= INT32_MAX)

+			{

+				renderDone = true;

+				overflow = true;

+				break;

+			}

+

 			if (++tickCounter >= 4)

 			{

 				tickCounter = 0;

@@ -385,10 +402,11 @@

 	dump_Close(f, sampleCounter);

 	resumeAudio();

+	if (overflow)

+		okBoxThreadSafe(0, "System message", "Rendering stopped, file exceeded 2GB!");

+

 	editor.diskOpReadOnOpen = true;

 	return true;

-

-	(void)ptr;

 }

 static void wavRender(bool checkOverwrite)