fix: avoid overflow warnings from titlepage definition

src/beamerinnerthememoloch.dtx

@@ -98,7 +98,7 @@
 % space on the title slide.
 %    \begin{macrocode}
 \setbeamertemplate{title page}{
-  \begin{minipage}[b][\paperheight]{\textwidth}
+  \begin{minipage}[b]{\textwidth}%
     \ifx\inserttitlegraphic\@empty\else\usebeamertemplate*{title graphic}\fi
     \vfill%
     \ifx\inserttitle\@empty\else\usebeamertemplate*{title}\fi
@@ -116,7 +116,7 @@
     \ifx\beamer@shortauthor\@empty\else\usebeamertemplate*{author}\fi
     \ifx\insertinstitute\@empty\else\usebeamertemplate*{institute}\fi
     \ifx\insertdate\@empty\else\usebeamertemplate*{date}\fi
-    \vfill
+    \vfill%
     \null
   \end{minipage}
 }