Fix linux warnings
Review URL: http://codereview.appspot.com/6354093/



git-svn-id: http://skia.googlecode.com/svn/trunk@4554 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/gl/GrGpuGL.cpp b/src/gpu/gl/GrGpuGL.cpp
index 7c1306e..7ebe9d7 100644
--- a/src/gpu/gl/GrGpuGL.cpp
+++ b/src/gpu/gl/GrGpuGL.cpp
@@ -1810,6 +1810,7 @@
         default:
             // Only the above two fill rules are allowed.
             GrCrash("Unexpected path fill.");
+            return; // suppress unused var warning.
     }
     GrGLint writeMask = fStencilSettings.writeMask(GrStencilSettings::kFront_Face);
     GL_CALL(StencilFillPath(id, fillMode, writeMask));