Save comparisons for release.

tools/viewer/sk_app/android/surface_glue_android.cpp

Index: tools/viewer/sk_app/android/surface_glue_android.cpp
diff --git a/tools/viewer/sk_app/android/surface_glue_android.cpp b/tools/viewer/sk_app/android/surface_glue_android.cpp
index 9e35407255f8956eea8d1496692d7684886a4ede..3a4fca539c8204489e381c4b6cba7c0fc0c261c6 100644
--- a/tools/viewer/sk_app/android/surface_glue_android.cpp
+++ b/tools/viewer/sk_app/android/surface_glue_android.cpp
@@ -77,11 +77,13 @@ void SkiaAndroidApp::paintIfNeeded() {
 }
 
 void SkiaAndroidApp::postMessage(const Message& message) const {
-    SkAssertResult(write(fPipes[1], &message, sizeof(message)) == sizeof(message));
+    SkDEBUGCODE(auto writeSize =) write(fPipes[1], &message, sizeof(message));
+    SkASSERT(writeSize == sizeof(message));
 }
 
 void SkiaAndroidApp::readMessage(Message* message) const {
-    SkAssertResult(read(fPipes[0], message, sizeof(Message)) == sizeof(Message));
+    SkDEBUGCODE(auto readSize =) read(fPipes[0], message, sizeof(Message));
+    SkASSERT(readSize == sizeof(Message));
 }
 
 void SkiaAndroidApp::inval() {