Fix labels missing the colon token in rust ungrammar

Veykril · Veykril · commit 8bb6876396f9 · 2020-12-15T18:41:29.000+01:00
diff --git a/src/tools/rust-analyzer/lib/ungrammar/rust.ungram b/src/tools/rust-analyzer/lib/ungrammar/rust.ungram
@@ -453,7 +453,7 @@ WhileExpr =
   loop_body:BlockExpr
 
 Label =
-  'lifetime'
+  'lifetime' ':'
 
 BreakExpr =
   Attr* 'break' 'lifetime'? Expr?
