Broaden exception handling around Camera#startPreview().

Some devices will randomly throw RuntimeExceptions here due to hardware
issues. We were already doing broader catch statement in CameraView, so
I moved it here as well.

src/org/thoughtcrime/securesms/camera/Camera1Controller.java

@@ -78,7 +78,7 @@ public class Camera1Controller {
         camera.setPreviewTexture(surfaceTexture);
         camera.startPreview();
         enforcer.markCompleted(Stage.PREVIEW_STARTED);
-      } catch (IOException e) {
+      } catch (Exception e) {
         Log.w(TAG, "Failed to start preview.", e);
         eventListener.onCameraUnavailable();
       }