Simplify and robustify lambda PCH test

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@150493 91177308-0d34-0410-b5e6-96231b3b80d8

test/PCH/cxx11-lambdas.cpp

@@ -28,12 +28,10 @@ inline int sum_array(int n) {
 }
 #else
 
-// CHECK-PRINT: float add_slowly
+// CHECK-PRINT: T add_slowly
 // CHECK-PRINT: return [=, &y]
 template float add_slowly(const float&, const float&);
 
-// CHECK-PRINT: int add_slowly
-// CHECK-PRINT: return [=, &y]
 int add(int x, int y) {
   return add_int_slowly_twice(x, y) + sum_array(4);
 }