Update primary symlinks after mounting.

Since otherwise we might have a stale path.

Bug: 19993667
Change-Id: I099e3dc0c5aa9ab6820cded4f2ae7fd6bf18ea40
diff --git a/VolumeManager.cpp b/VolumeManager.cpp
index 5c4f9af..8f73e63 100755
--- a/VolumeManager.cpp
+++ b/VolumeManager.cpp
@@ -379,6 +379,7 @@
             SLOGW("Failed to unlink %s: %s", target.c_str(), strerror(errno));
         }
     }
+    LOG(DEBUG) << "Linking " << source << " to " << target;
     if (TEMP_FAILURE_RETRY(symlink(source.c_str(), target.c_str()))) {
         SLOGW("Failed to link %s to %s: %s", source.c_str(), target.c_str(),
                 strerror(errno));