Fix Linux build warnings

Author: jsiegle

Plugins/SpikeViewer/SpikeDisplay.cpp

@@ -249,6 +249,8 @@ bool SpikeDisplay::getMonitorStateForPlot (int plotNum)
 {
     if (spikePlots.size() > plotNum)
         return spikePlots[plotNum]->getMonitorState();
+    else
+        return false;
 }
 
 void SpikeDisplay::setMonitorStateForPlot (int plotNum, bool state)

Source/UI/DefaultConfig.cpp

@@ -273,8 +273,6 @@ bool DefaultConfigComponent::keyPressed (const KeyPress& key, Component* origina
             neuropixelsButton->setToggleState (true, sendNotification);
             fileReaderButton->setToggleState (false, sendNotification);
         }
-
-        return true;
     }
     // Handle right/shift+tab key presses to move right
     else if (key == KeyPress::leftKey || key == KeyPress(KeyPress::tabKey, ModifierKeys::shiftModifier, 0))
@@ -289,13 +287,12 @@ bool DefaultConfigComponent::keyPressed (const KeyPress& key, Component* origina
             acqBoardButton->setToggleState (true, sendNotification);
             fileReaderButton->setToggleState (false, sendNotification);
         }
-
-        return true;
     }
     // Handle return key presses to trigger the load button
     else if (key == KeyPress::returnKey)
     {
         goButton->triggerClick();
-        return true;
     }
+
+    return true;
 }