Mac fix

On macos, you can't use a wstring inside an fstream

olcConsoleGameEngineSDL.h

@@ -368,9 +368,11 @@ public:
 			return m_Colours[sy * nWidth + sx];
 	}
 
-	    bool Save(std::string sFile)
+	    bool Save(std::wstring sFile)
 	{
-                std::ofstream f(sFile.c_str(), std::ios::out | std::ios::binary);
+		std::string path(sFile.begin(), sFile.end());
+
+		std::ofstream f(path.c_str(), std::ios::out | std::ios::binary);
 		if (!f.is_open()) return false;
 
 		f.write((char*)&nWidth, sizeof(int));
@@ -383,24 +385,26 @@ public:
 		return true;
 	}
 
-    bool Load(std::string sFile)
+	bool Load(std::wstring sFile)
 	{
 		delete[] m_Glyphs;
 		delete[] m_Colours;
 		nWidth = 0;
 		nHeight = 0;
 
-                std::ifstream f(sFile.c_str(), std::ios::in | std::ios::binary);
+		std::string path(sFile.begin(), sFile.end());
+
+		std::ifstream f(path.c_str(), std::ios::in | std::ios::binary);
 		if (!f.is_open()) return false;
 
 		// get file data
-                f.read ((char*)&nWidth, sizeof(int));
+		f.read((char*)&nWidth, sizeof(int));
-                f.read ((char*)&nHeight, sizeof(int));
+		f.read((char*)&nHeight, sizeof(int));
 
 		Create(nWidth, nHeight);
 
-                f.read ((char*)m_Colours, sizeof(short) * nWidth * nHeight);
+		f.read((char*)m_Colours, sizeof(short) * nWidth * nHeight);
-                f.read ((char*)m_Glyphs, sizeof(wchar_t) * nWidth * nHeight);
+		f.read((char*)m_Glyphs, sizeof(wchar_t) * nWidth * nHeight);
 
 		f.close();