Add default sample rate to the supported sample rate list if we can't…

… find any supported ones.

src/audio/PortAudioEngine.cpp

@@ -194,7 +194,15 @@ std::vector<int> PortAudioEngine::getSupportedSampleRates(wxString deviceName, A
                 }
 
                 rateIndex++;
-            }            
+            }
+
+            // If we can't find a supported sample rate, just assume that the
+            // default sample rate is supported. If that can't actually be used,
+            // we can deal with it later.
+            if (result.size() == 0)
+            {
+                result.push_back(device.defaultSampleRate);
+            }
         }
     }
 
@@ -273,4 +281,4 @@ bool PortAudioEngine::IsDeviceWhitelisted_(const char* devName)
         !strcmp(devName, "vdownmix") ||            
         !strcmp(devName, "dmix") ||            
         !strcmp(devName, "default");
-}
+}