Complete pattern match in the example.

Author: cristianoc

jscomp/test/res_debug.js

@@ -19,16 +19,9 @@ function testMatch(v) {
   var y = v.y;
   if (y !== undefined) {
     return y;
+  } else {
+    return 42;
   }
-  throw {
-        RE_EXN_ID: "Match_failure",
-        _1: [
-          "res_debug.res",
-          50,
-          2
-        ],
-        Error: new Error()
-      };
 }
 
 var v2 = newrecord;

jscomp/test/res_debug.res

@@ -44,12 +44,10 @@ let v1 : r = { x : 3
   , z : 3
 }
 
-@@warning("-8") // Turn off incomplete pattern match
-
 let testMatch = v =>
   switch v {
   | {y} => y
-//  | {y: @optional None} => 42
+  | {y: @optional None} => 42
   }
 
 let h = '😊'