Fix some compiler warnings

app/main.cpp

@@ -621,12 +621,22 @@ int main(int argc, char *argv[])
     if (AttachConsole(ATTACH_PARENT_PROCESS)) {
         // If we didn't have an old stdout/stderr handle, use the new CONOUT$ handle
         if (IS_UNSPECIFIED_HANDLE(oldConOut)) {
-            freopen("CONOUT$", "w", stdout);
-            setvbuf(stdout, NULL, _IONBF, 0);
+            FILE* fp;
+            if (freopen_s(&fp, "CONOUT$", "w", stdout) == 0) {
+                setvbuf(fp, NULL, _IONBF, 0);
+            }
+            else {
+                freopen_s(&fp, "NUL", "w", stdout);
+            }
         }
         if (IS_UNSPECIFIED_HANDLE(oldConErr)) {
-            freopen("CONOUT$", "w", stderr);
-            setvbuf(stderr, NULL, _IONBF, 0);
+            FILE* fp;
+            if (freopen_s(&fp, "CONOUT$", "w", stderr) == 0) {
+                setvbuf(fp, NULL, _IONBF, 0);
+            }
+            else {
+                freopen_s(&fp, "NUL", "w", stderr);
+            }
         }
     }
 #endif

app/streaming/audio/audio.cpp

@@ -97,6 +97,8 @@ int Session::getAudioRendererCapabilities(int audioConfiguration)
 {
     int caps = 0;
 
+    Q_UNUSED(audioConfiguration);
+
     // All audio renderers support arbitrary audio duration
     caps |= CAPABILITY_SUPPORTS_ARBITRARY_AUDIO_DURATION;
 

app/streaming/bandwidth.cpp

@@ -67,7 +67,7 @@ double BandwidthTracker::GetPeakMbps() {
 }
 
 unsigned int BandwidthTracker::GetWindowSeconds() {
-    return windowSeconds.count();
+    return (unsigned int)windowSeconds.count();
 }
 
 /// private methods