Add a couple of getSemanticsProviding calls

Author: hamishknight

lib/IDE/Refactoring.cpp

@@ -4534,6 +4534,9 @@ struct CallbackCondition {
   ///   - `case .failure(let bind) = <Subject>`
   ///   - `let bind = try? <Subject>.get()`
   CallbackCondition(const Pattern *P, const Expr *Init) {
+    Init = Init->getSemanticsProvidingExpr();
+    P = P->getSemanticsProvidingPattern();
+
     if (auto *DRE = dyn_cast<DeclRefExpr>(Init)) {
       if (auto *OSP = dyn_cast<OptionalSomePattern>(P)) {
         // `let bind = <Subject>`

test/refactoring/ConvertAsync/convert_params_single.swift

@@ -372,12 +372,16 @@ withError { res, err in
   if let str2 = res {
     print("got result \(str2)")
   }
+  if case (let str3?) = (res) {
+    print("got result \(str3)")
+  }
   print("after")
 }
 // MULTIBIND: let str = try await withError()
 // MULTIBIND-NEXT: print("before")
 // MULTIBIND-NEXT: print("got result \(str)")
 // MULTIBIND-NEXT: print("got result \(str)")
+// MULTIBIND-NEXT: print("got result \(str)")
 // MULTIBIND-NEXT: print("after")
 
 // RUN: %refactor -convert-call-to-async-alternative -dump-text -source-filename %s -pos=%(line+1):3 | %FileCheck -check-prefix=NESTEDRET %s