Fix accidental buffer overflow... duhhhhh

 On branch master
 Your branch is up-to-date with 'origin/master'.

 Changes to be committed:
	modified:   ../../src/verilog_ast.c

src/verilog_ast.c

@@ -2142,7 +2142,7 @@ ast_identifier ast_new_identifier(
 ){
     ast_identifier tr = ast_calloc(1,sizeof(struct ast_identifier_t));
 
-    size_t length = strlen(identifier);
+    size_t length = strlen(identifier) + 1;
     tr -> identifier = calloc(length, sizeof(char));
     strcat(tr -> identifier, identifier);