YANG parser BUGFIX processing block comments

Incorrect processing of **/ sequence terminating a comment.
diff --git a/src/parser_yang.c b/src/parser_yang.c
index bf1361c..3719f12 100644
--- a/src/parser_yang.c
+++ b/src/parser_yang.c
@@ -342,7 +342,7 @@
         case 3:
             if (**data == '/') {
                 comment = 0;
-            } else {
+            } else if (**data != '*') {
                 if (**data == '\n') {
                     ++ctx->line;
                 }