Silence some compile warnings with reinterpret cast

src/moodbar/moodbarpipeline.cpp

@@ -117,7 +117,7 @@ void MoodbarPipeline::Start() {
   g_object_set(decodebin, "uri", local_filename_.toEncoded().constData(), nullptr);
   g_object_set(spectrum, "bands", kBands, nullptr);
 
-  GstFastSpectrum* fast_spectrum = GST_FASTSPECTRUM(spectrum);
+  GstFastSpectrum* fast_spectrum = reinterpret_cast<GstFastSpectrum*>(spectrum);
   fast_spectrum->output_callback = [this](double* magnitudes, int size) { builder_->AddFrame(magnitudes, size); };
 
   // Connect signals

src/widgets/qsearchfield_mac.mm

@@ -123,7 +123,7 @@ public:
   // First, check if we have the focus.
   // If no, it probably means this event isn't for us.
   NSResponder* firstResponder = [[NSApp keyWindow] firstResponder];
-  if ([firstResponder isKindOfClass:[NSText class]] && [(NSText*)firstResponder delegate] == self) {
+  if ([firstResponder isKindOfClass:[NSText class]] && (NSSearchField*)([(NSText*)firstResponder delegate]) == self) {
 
     if ([event type] == NSEventTypeKeyDown && [event modifierFlags] & NSEventModifierFlagCommand) {
       QString keyString = toQString([event characters]);