fix bug caused by main app & libc having map set; cannot free them
diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
index b8c26ac..93a4b44 100644
--- a/src/ldso/dynlink.c
+++ b/src/ldso/dynlink.c
@@ -572,7 +572,7 @@
 	struct dso *n;
 	while (p) {
 		n = p->next;
-		if (p->map) free(p);
+		if (p->map && p!=libc && p!=head) free(p);
 		p = n;
 	}
 }