vendor partition: mount if found in super

Change-Id: I6348511087aca6fc722dc48677794e0d8b4a63fa
diff --git a/twrp.cpp b/twrp.cpp
index b5f922b..b84971c 100755
--- a/twrp.cpp
+++ b/twrp.cpp
@@ -400,6 +400,9 @@
 				LOGERR("Unable to prepare super volumes.\n");
 			}
 			sys->Mount(true);
+			if (ven) {
+				ven->Mount(true);
+			}
 			twrpApex apex;
 			if (!apex.loadApexImages()) {
 				LOGERR("Unable to load apex images from %s\n", APEX_DIR);