Open std::fstream in a unicode-safe manner.

Source/Core/Core/Src/DSP/assemble.cpp

@@ -754,7 +754,8 @@ bool DSPAssembler::AssembleFile(const char *fname, int pass)
 {
     int disable_text = 0; // modified by Hermes
 
-	std::ifstream fsrc(fname);
+	std::ifstream fsrc;
+	OpenFStream(fsrc, fname, std::ios_base::in);
 
 	if (fsrc.fail())
 	{

Source/Core/Core/Src/HW/WiimoteEmu/EmuSubroutines.cpp

@@ -297,7 +297,7 @@ void Wiimote::WriteData(const wm_write_data* const wd)
 			{
 				// writing the whole mii block each write :/
 				std::ofstream file;
-				file.open((File::GetUserPath(D_WIIUSER_IDX) + "mii.bin").c_str(), std::ios::binary | std::ios::out);
+				OpenFStream(file, File::GetUserPath(D_WIIUSER_IDX) + "mii.bin", std::ios::binary | std::ios::out);
 				file.write((char*)m_eeprom + 0x0FCA, 0x02f0);
 				file.close();
 			}

Source/Core/Core/Src/HW/WiimoteEmu/Speaker.cpp

@@ -106,7 +106,7 @@ void Wiimote::SpeakerData(wm_speaker_data* sd)
 		File::Delete("rmtdump.wav");
 		File::Delete("rmtdump.bin");
 		atexit(stopdamnwav);
-		ofile.open("rmtdump.bin", ofile.binary | ofile.out);
+		OpenFStream(ofile, "rmtdump.bin", ofile.binary | ofile.out);
 		wav.Start("rmtdump.wav", 6000/*Common::swap16(m_reg_speaker.sample_rate)*/);
 	}
 	wav.AddMonoSamples(samples, sd->length*2);