twrpDigest: don't crash when zip.md5 file is empty

Change-Id: I14145b32c7993bb0cd236b2982ed00bc2c791282
mdmower · Mar 9, 2017 · fc4ff5c · fc4ff5c
1 parent 077e1c7
commit fc4ff5c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/twrpDigest.cpp b/twrpDigest.cpp
@@ -147,7 +147,7 @@ int twrpDigest::verify_md5digest(void) {
 		snprintf(hex, 3, "%02x", md5sum[i]);
 		md5str += hex;
 	}
-	if (tokens.at(0) != md5str)
+	if (tokens.empty() || tokens.at(0) != md5str)
 		return MD5_MATCH_FAIL;
 
 	return MD5_OK;