Add a missing '[' to the tests from r305719

This clarifies the tests as the missing ']' is important, and not the '['.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@305804 91177308-0d34-0410-b5e6-96231b3b80d8

test/Parser/objc-at-implementation-eof-crash.m

@@ -13,7 +13,7 @@
 @implementation ClassB // expected-note {{implementation started here}}
 
 - (void) method:(ClassA *)mgr { // expected-note {{to match this '{'}}
-  mgr fileExistsAtPath:0
+  [mgr fileExistsAtPath:0
 } // expected-error {{expected ']'}}
 
 @implementation ClassC //              \

test/Parser/objc-at-interface-eof-crash.m

@@ -13,7 +13,7 @@
 @implementation ClassB // expected-note {{implementation started here}}
 
 - (void) method:(ClassA *)mgr { // expected-note {{to match this '{'}}
-  mgr fileExistsAtPath:0
+  [mgr fileExistsAtPath:0
 } // expected-error {{expected ']'}}
 
 @interface ClassC //                   \