Try to stop rtmidi from crashing on start; Fix typo

source/backend/engine/CarlaEngineRtAudio.cpp

@@ -789,7 +789,12 @@ protected:
             newRtMidiPortName += ":";
             newRtMidiPortName += portName;
 
-            RtMidiIn* const rtMidiIn(new RtMidiIn(getMatchedAudioMidiAPI(fAudio.getCurrentApi()), newRtMidiPortName.buffer(), 512));
+            RtMidiIn* rtMidiIn;
+
+            try {
+                rtMidiIn = new RtMidiIn(getMatchedAudioMidiAPI(fAudio.getCurrentApi()), newRtMidiPortName.buffer(), 512);
+            } CARLA_SAFE_EXCEPTION_RETURN("new RtMidiIn", false);
+
             rtMidiIn->ignoreTypes();
             rtMidiIn->setCallback(carla_rtmidi_callback, this);
 
@@ -836,7 +841,11 @@ protected:
             newRtMidiPortName += ":";
             newRtMidiPortName += portName;
 
-            RtMidiOut* const rtMidiOut(new RtMidiOut(getMatchedAudioMidiAPI(fAudio.getCurrentApi()), newRtMidiPortName.buffer()));
+            RtMidiOut* rtMidiOut;
+
+            try {
+                rtMidiOut = new RtMidiOut(getMatchedAudioMidiAPI(fAudio.getCurrentApi()), newRtMidiPortName.buffer());
+            } CARLA_SAFE_EXCEPTION_RETURN("new RtMidiOut", false);
 
             bool found = false;
             uint rtMidiPortIndex;

source/modules/rtmidi/RtMidi.cpp

@@ -931,7 +931,7 @@ void MidiOutCore :: initialize( const std::string& clientName )
   OSStatus result = MIDIClientCreate(name, NULL, NULL, &client );
   if ( result != noErr ) {
     std::ostringstream ost;
-    ost << "MidiInCore::initialize: error creating OS-X MIDI client object (" << result << ").";
+    ost << "MidiOutCore::initialize: error creating OS-X MIDI client object (" << result << ").";
     errorString_ = ost.str();
     error( RtMidiError::DRIVER_ERROR, errorString_ );
     return;