macOS: Be explicit about string encodings when logging assertions

modules/juce_core/logging/juce_Logger.cpp

@@ -49,7 +49,7 @@ void Logger::writeToLog (const String& message)
 void JUCE_API JUCE_CALLTYPE logAssertion (const char* const filename, const int lineNum) noexcept
 {
     String m ("JUCE Assertion failure in ");
-    m << File::createFileWithoutCheckingPath (filename).getFileName() << ':' << lineNum;
+    m << File::createFileWithoutCheckingPath (CharPointer_UTF8 (filename)).getFileName() << ':' << lineNum;
 
    #if JUCE_LOG_ASSERTIONS
     Logger::writeToLog (m);

modules/juce_core/native/juce_mac_Files.mm

@@ -201,7 +201,7 @@ File File::getSpecialLocation (const SpecialLocationType type)
 
             case invokedExecutableFile:
                 if (juce_argv != nullptr && juce_argc > 0)
-                    return File::getCurrentWorkingDirectory().getChildFile (String (juce_argv[0]));
+                    return File::getCurrentWorkingDirectory().getChildFile (CharPointer_UTF8 (juce_argv[0]));
                 // deliberate fall-through...
                 JUCE_FALLTHROUGH