JStudio/JMessage work and cleanup

src/m_Do/m_Do_graphic.cpp

@@ -1088,10 +1088,10 @@ out:
 }
 
 /* 8000AAC4-8000AB1C       .text mCaptureProc__FPv */
-void* mCaptureProc(void* dummy) {
-    void* bytesCopied = (void*)encode_s3tc(mCaptureCaptureBuffer, mCaptureTextureBuffer, mCaptureSizeWidth, mCaptureSizeHeight, (GXTexFmt)mCaptureCaptureFormat);
+u32 mCaptureProc(void* dummy) {
+    u32 bytesCopied = encode_s3tc(mCaptureCaptureBuffer, mCaptureTextureBuffer, mCaptureSizeWidth, mCaptureSizeHeight, (GXTexFmt)mCaptureCaptureFormat);
     DCStoreRange(mCaptureTextureBuffer, mCaptureTextureSize);
-    OSExitThread(bytesCopied);
+    OSExitThread((void*)bytesCopied);
     return bytesCopied;
 }
 

src/m_Do/m_Do_main.cpp

@@ -440,7 +440,7 @@ void main01() {
 OSThread mainThread;
 
 /* 80006464-800065DC       .text main */
-void main() {
+int main() {
     OSThread* current_thread = OSGetCurrentThread();
     u8 ALIGN_DECL(0x20) stack[0xF000];
 
@@ -483,5 +483,5 @@ void main() {
     OSCreateThread(&mainThread, (void*)main01, 0, stack + sizeof(stack), sizeof(stack), priority, 0);
     OSResumeThread(&mainThread);
     OSSetThreadPriority(current_thread, 0x1F);
-    OSSuspendThread(current_thread);
+    return OSSuspendThread(current_thread);
 }