[Parser] Fix suggested fix-its on enum case with empty parens

rdar://problem/58546221

Author: xymus

lib/Parse/ParsePattern.cpp

@@ -208,9 +208,10 @@ Parser::parseParameterClause(SourceLoc &leftParenLoc,
       diagnose(leftParenLoc, diagnostic)
         .highlight({leftParenLoc, rightParenLoc});
       diagnose(leftParenLoc, diag::enum_element_empty_arglist_delete)
-        .fixItRemoveChars(leftParenLoc, rightParenLoc);
+        .fixItRemoveChars(leftParenLoc,
+                          Lexer::getLocForEndOfToken(SourceMgr, rightParenLoc));
       diagnose(leftParenLoc, diag::enum_element_empty_arglist_add_void)
-        .fixItInsert(leftParenLoc, "Void");
+        .fixItInsertAfter(leftParenLoc, "Void");
     }
     return ParserStatus();
   }

test/Parse/enum.swift

@@ -549,8 +549,8 @@ enum switch {} // expected-error {{keyword 'switch' cannot be used as an identif
 
 enum SE0155 {
   case emptyArgs() // expected-warning {{enum element with associated values must have at least one associated value}}
-  // expected-note@-1 {{did you mean to remove the empty associated value list?}} {{17-18=}}
-  // expected-note@-2 {{did you mean to explicitly add a 'Void' associated value?}} {{17-17=Void}}
+  // expected-note@-1 {{did you mean to remove the empty associated value list?}} {{17-19=}}
+  // expected-note@-2 {{did you mean to explicitly add a 'Void' associated value?}} {{18-18=Void}}
 }
 
 // SR-11261