clean up some warnings when building recovery

Change-Id: I1541534ee6978ddf8d548433986679ce9507d508
diff --git a/edify/main.c b/edify/main.c
index 9e6bab7..b3fad53 100644
--- a/edify/main.c
+++ b/edify/main.c
@@ -30,9 +30,7 @@
 
     printf(".");
 
-    yy_scan_string(expr_str);
-    int error_count = 0;
-    error = yyparse(&e, &error_count);
+    int error_count = parse_string(expr_str, &e, &error_count);
     if (error > 0 || error_count > 0) {
         printf("error parsing \"%s\" (%d errors)\n",
                expr_str, error_count);
@@ -193,8 +191,7 @@
 
     Expr* root;
     int error_count = 0;
-    yy_scan_bytes(buffer, size);
-    int error = yyparse(&root, &error_count);
+    int error = parse_string(buffer, &root, &error_count);
     printf("parse returned %d; %d errors encountered\n", error, error_count);
     if (error == 0 || error_count > 0) {