Fix broken titleprogressbar option

Accidentally removed the negative pull up of the progress bar.

beamerthemem.sty

@@ -204,6 +204,7 @@
   \usebeamerfont{frametitle}\MakeLowercase{\insertframetitle}%
 \end{beamercolorbox}%
 \if@useTitleProgressBar
+  \vspace{-.5em}
   \begin{beamercolorbox}[wd=\paperwidth,ht=1pt,dp=0pt]{frametitle}
     \progressbar@titleprogressbar
   \end{beamercolorbox}