[Fixit] Also add & to bridge T and UnsafeMutablePointer<T>.

Author: nkcsgexi

lib/Sema/CSDiag.cpp

@@ -3491,7 +3491,8 @@ bool FailureDiagnosis::diagnoseContextualConversionError() {
           return true;
         }
       }
-    } else if (contextDecl == CS->TC.Context.getUnsafePointerDecl()) {
+    } else if (contextDecl == CS->TC.Context.getUnsafePointerDecl() ||
+               contextDecl == CS->TC.Context.getUnsafeMutablePointerDecl()) {
       SmallVector<Type, 4> scratch;
       for (Type arg : contextualType->getAllGenericArgs(scratch)) {
         if (arg->isEqual(exprType)) {

test/Sema/diag_type_conversion.swift

@@ -2,9 +2,11 @@
 
 func foo1(_ a: [Int]) {}
 func foo2(_ a : UnsafePointer<Int>) {}
+func foo4(_ a : UnsafeMutablePointer<Int>) {}
 func foo3 () {
   foo1(1) // expected-error {{cannot convert value of type 'Int' to expected argument type '[Int]'}} {{8-8=[}} {{9-9=]}}
   foo2(1) // expected-error {{cannot convert value of type 'Int' to expected argument type 'UnsafePointer<Int>'}} {{8-8=&}}
   var j = 3
   foo2(j) // expected-error {{cannot convert value of type 'Int' to expected argument type 'UnsafePointer<Int>'}} {{8-8=&}}
+  foo4(j) // expected-error {{cannot convert value of type 'Int' to expected argument type 'UnsafeMutablePointer<Int>'}} {{8-8=&}}
 }