fix c_comments

tests/test_c_comments.expected_results

@@ -0,0 +1 @@
+1

tests/test_c_comments.krak

@@ -0,0 +1,8 @@
+/*here*/
+/*here*/import /*here*/io/*here*/:/*here*/*/*here*/
+/*here*/
+/*here*/fun/*here*/ main/*here*/(/*here*/)/*here*/:/*here*/ int/*here*/  {/*here*/
+ /*here*/   println/*here*/( /*here*/1 /*here*/ )/*here*/
+       /*here*/ return  /*here*/0/*here*/
+ /*here*/}/*here*/
+/*here*/