Index: read.c
===================================================================
--- read.c	(revision 30633)
+++ read.c	(revision 30634)
@@ -731,6 +731,11 @@
 					}
 					break;
 			}
+
+			/* fix memory leak */
+			if ((tok == T_ID) || (tok == T_QSTR))
+				free(lval.un.s);
+
 			pcb_bxl_lex_reset(&lctx); /* prepare for the next token */
 		}
 	}