Fix occurrences of "-Wextra-semi-stmt"

Docs-Preview: https://skia.org/?cl=173761
Change-Id: Iefdb91cd28eabb4b01b7b42a4f300b0b4caf05d9
Reviewed-on: https://skia-review.googlesource.com/c/173761
Reviewed-by: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index 11c8e67..03ba4d1 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -1347,7 +1347,7 @@
                 REPORTER_ASSERT(reporter, 60 == cache->getPurgeableBytes());
                 break;
             }
-        };
+        }
 
         // ensure all are purged before the next
         context->contextPriv().purgeAllUnlockedResources_ForTesting();