allow space between @ and *

src/Language/SystemVerilog/Parser/Parse.y

@@ -1176,6 +1176,7 @@ EventControl :: { Sense }
   | "@" "(" "*" ")"    { SenseStar }
   | "@" "(*" ")"       { SenseStar }
   | "@" "(" "*)"       { SenseStar }
+  | "@" "*"            { SenseStar }
   | "@*"               { SenseStar }
   | "@" Identifier     { Sense $ LHSIdent $2 }
 Senses :: { Sense }

test/basic/sense_star.sv

@@ -2,6 +2,7 @@ module top;
 `define TEST(sense) always sense $display(`"sense %b`", x);
     reg x, y;
     `TEST(@*)
+    `TEST(@ *)
     `TEST(@x)
     `TEST(@y)
     `TEST(@ ( * ))