Format the headers.
diff --git a/objectivec/GPBCodedInputStream.h b/objectivec/GPBCodedInputStream.h
index b7e1c7e..cbfaaf1 100644
--- a/objectivec/GPBCodedInputStream.h
+++ b/objectivec/GPBCodedInputStream.h
@@ -185,7 +185,7 @@
  *                          extensions for message.
  **/
 - (void)readMessage:(GPBMessage *)message
-  extensionRegistry:(nullable id<GPBExtensionRegistry>)extensionRegistry;
+    extensionRegistry:(nullable id<GPBExtensionRegistry>)extensionRegistry;
 
 /**
  * Reads and discards a single field, given its tag value.