drm_hwcomposer: add missing break statement

By a stroke of luck, the fall through case had a break statement.

Change-Id: I29cb1206d114f31ec58a603cd9dcb986764d8344
diff --git a/drmdisplaycompositor.cpp b/drmdisplaycompositor.cpp
index 1d22564..9d4cdff 100644
--- a/drmdisplaycompositor.cpp
+++ b/drmdisplaycompositor.cpp
@@ -472,6 +472,7 @@
         fb_id = layer.buffer->fb_id;
         display_frame = layer.display_frame;
         source_crop = layer.source_crop;
+        break;
       }
       case DrmCompositionPlane::kSourceSquash:
         break;
@@ -526,6 +527,7 @@
             ALOGE("Invalid transform value 0x%x given", layer.transform);
             break;
         }
+        break;
       }
     }