Small cleanups and linter fixes.

runtime/bin/file_system_watcher_android.cc

Index: runtime/bin/file_system_watcher_android.cc
diff --git a/runtime/bin/file_system_watcher_android.cc b/runtime/bin/file_system_watcher_android.cc
index 4c0380ea2d19c83a6b5527c62f45419debe6b29e..6843734d7ce6a1880e32258688a45b542cf38a19 100644
--- a/runtime/bin/file_system_watcher_android.cc
+++ b/runtime/bin/file_system_watcher_android.cc
@@ -120,7 +120,7 @@ Dart_Handle FileSystemWatcher::ReadEvents(intptr_t id, intptr_t path_id) {
   while (offset < bytes) {
     struct inotify_event* e =
         reinterpret_cast<struct inotify_event*>(buffer + offset);
-    if ((e->mask & IN_IGNORED) == 0) {;
+    if ((e->mask & IN_IGNORED) == 0) {
       Dart_Handle event = Dart_NewList(5);
       int mask = InotifyEventToMask(e);
       Dart_ListSetAt(event, 0, Dart_NewInteger(mask));