[FixCode] Make sure to accept the fixit in warning about 'where' syntax change.

Author: akyrtzi

lib/FrontendTool/FrontendTool.cpp

@@ -603,6 +603,7 @@ class JSONFixitWriter : public DiagnosticConsumer {
         Info.ID == diag::attr_decl_attr_now_on_type.ID ||
         Info.ID == diag::noescape_parameter.ID ||
         Info.ID == diag::noescape_autoclosure.ID ||
+        Info.ID == diag::where_inside_brackets.ID ||
         Info.ID == diag::selector_construction_suggest.ID ||
         Info.ID == diag::selector_literal_deprecated_suggest.ID)
       return true;

test/FixCode/fixits-apply.swift

@@ -214,3 +214,10 @@ func fnWithClosure(c: @escaping ()->()) {}
 func testescape(rec: ()->()) {
   fnWithClosure { rec() }
 }
+
+protocol Prot1 {}
+protocol Prot2 {
+  associatedtype Ty = Prot1
+}
+class Cls1 : Prot1 {}
+func testwhere<T: Prot2 where T.Ty == Cls1>(_: T) {}

test/FixCode/fixits-apply.swift.result

@@ -217,3 +217,10 @@ func fnWithClosure(c: @escaping ()->()) {}
 func testescape(rec: @escaping ()->()) {
   fnWithClosure { rec() }
 }
+
+protocol Prot1 {}
+protocol Prot2 {
+  associatedtype Ty = Prot1
+}
+class Cls1 : Prot1 {}
+func testwhere<T: Prot2>(_: T) where T.Ty == Cls1 {}