Added D3DXDisassembleShader definition for MinGW.

tools/shaderc/shaderc_dx9.cpp

@@ -14,6 +14,12 @@ BX_PRAGMA_DIAGNOSTIC_IGNORED_CLANG_GCC("-Wundef");
 #include <d3dx9.h>
 BX_PRAGMA_DIAGNOSTIC_POP();
 
+#if defined(__MINGW32__)
+#	ifndef D3DXDisassembleShader
+extern "C" HRESULT WINAPI D3DXDisassembleShader(CONST DWORD* pShader, BOOL EnableColorCode, LPCSTR pComments, LPD3DXBUFFER* ppDisassembly);
+#	endif // D3DXDisassembleShader
+#endif // !defined(__MINGW32__)
+
 struct UniformRemapDx9
 {
 	UniformType::Enum id;
@@ -250,7 +256,6 @@ bool compileHLSLShaderDx9(bx::CommandLine& _cmdLine, const std::string& _code, b
 	uint8_t nul = 0;
 	bx::write(_writer, nul);
 
-#if !defined(__MINGW32__)
 	if (_cmdLine.hasArg('\0', "disasm") )
 	{
 		LPD3DXBUFFER disasm;
@@ -269,7 +274,6 @@ bool compileHLSLShaderDx9(bx::CommandLine& _cmdLine, const std::string& _code, b
 			disasm->Release();
 		}
 	}
-#endif // !defined(__MINGW32__)
 
 	if (NULL != code)
 	{