Should be good untill you don't know /var is the directory where multiple most required files reside including default location for DNS zone files, FTP's default and many more...
In your case it should have no severe effect because of you managed to make a symlink back to the same place but yes some programs would not like the way it would be!!! (depends upon when the check for /var directory performs it should returns true)
But as the free space of /var is now only several Mb, so I want to do this
the above would be a temporary fix in that condition, i would recommend what @zhjim has suggested to resize /var.