handle colon token

src/compiler/parser.ts

@@ -7330,7 +7330,7 @@ namespace Parser {
 
     function nextTokenIsEqualsOrSemicolonToken() {
         nextToken();
-        return token() === SyntaxKind.EqualsToken || token() === SyntaxKind.SemicolonToken;
+        return token() === SyntaxKind.EqualsToken || token() === SyntaxKind.SemicolonToken || token() === SyntaxKind.ColonToken;
     }
 
     function nextTokenIsBindingIdentifierOrStartOfDestructuringOnSameLine(disallowOf?: boolean) {

tests/baselines/reference/usingDeclarationsInForOf.4.errors.txt

@@ -1,8 +1,9 @@
-usingDeclarationsInForOf.4.ts(2,12): error TS1155: 'using' declarations must be initialized.
+usingDeclarationsInForOf.4.ts(3,12): error TS1155: 'using' declarations must be initialized.
 
 
 ==== usingDeclarationsInForOf.4.ts (1 errors) ====
     for (using of = null;;) break;
+    for (using of: null = null;;) break;
     for (using of;;) break;
                ~~
 !!! error TS1155: 'using' declarations must be initialized.

tests/baselines/reference/usingDeclarationsInForOf.4.js

@@ -2,10 +2,13 @@
 
 //// [usingDeclarationsInForOf.4.ts]
 for (using of = null;;) break;
+for (using of: null = null;;) break;
 for (using of;;) break;
 
 
 //// [usingDeclarationsInForOf.4.js]
+for (using of = null;;)
+    break;
 for (using of = null;;)
     break;
 for (using of;;)

tests/cases/conformance/statements/VariableStatements/usingDeclarations/usingDeclarationsInForOf.4.ts

@@ -4,4 +4,5 @@
 // @noTypesAndSymbols: true
 
 for (using of = null;;) break;
+for (using of: null = null;;) break;
 for (using of;;) break;