Do not check digest on mapped installs

Change-Id: I2d57eba354e4ec88f418208183f53c12e8548fcb
diff --git a/twrpDigestDriver.cpp b/twrpDigestDriver.cpp
index 4023c81..074b6c3 100755
--- a/twrpDigestDriver.cpp
+++ b/twrpDigestDriver.cpp
@@ -70,7 +70,7 @@
 
 	if (!TWFunc::Path_Exists(digestfile)) {
 		delete digest;
-		if (Filename.find(".zip") == std::string::npos) {
+		if (Filename.find(".zip") == std::string::npos && Filename.find(".map") == std::string::npos) {
 			gui_msg(Msg(msg::kError, "no_digest_found=No digest file found for '{1}'. Please unselect Enable Digest verification to restore.")(Filename));
 		} else {
 			return true;