Fix incorrectly set end locations for DeclareComponent and ComponentT…

…ypeAnnotation

Summary:
The `DeclareComponent` and `ComponentTypeAnnotation` nodes were
incorrectly setting their end loc as `tok_->getEndLoc()` (the end of the
current token) instead of `getPrevTokenEndLoc()` (the end of the node).

Reviewed By: avp

Differential Revision: D45594191

fbshipit-source-id: 57ce7d54ab0cf5442a6d8813ccf230447feb109c

lib/Parser/JSParserImpl-flow.cpp

@@ -225,7 +225,7 @@ Optional<ESTree::Node *> JSParserImpl::parseComponentDeclarationFlow(
 
     return setLocation(
         start,
-        tok_->getEndLoc(),
+        getPrevTokenEndLoc(),
         new (context_) ESTree::DeclareComponentNode(
             *optId, std::move(paramList), rest, typeParams, returnType));
   }
@@ -458,7 +458,7 @@ Optional<ESTree::Node *> JSParserImpl::parseComponentTypeAnnotationFlow() {
 
   return setLocation(
       start,
-      tok_->getEndLoc(),
+      getPrevTokenEndLoc(),
       new (context_) ESTree::ComponentTypeAnnotationNode(
           std::move(paramList), rest, typeParams, returnType));
 }