Missing comments in line-ends

This should never matter since expl3 is only ever loaded in vertical
mode, but I do that for consistency with other lines in that file.

l3kernel/expl3.dtx

@@ -1208,13 +1208,13 @@
     \DeclareOption{#1=false}{\chardef #2=0 }%
     \newcommand*#2{}%
     \chardef #2=0 %
-  }
+  }%
 \expl@create@bool@option{check-declarations}\l@expl@check@declarations@bool
 \expl@create@bool@option{log-functions}\l@expl@log@functions@bool
 \expl@create@bool@option{enable-debug}\l@expl@enable@debug@bool
 \let\expl@create@bool@option\@undefined
 \chardef\l@expl@enable@debug@bool=0 %
-\newcommand*\l@expl@options@clist{}
+\newcommand*\l@expl@options@clist{}%
 \DeclareOption*
   {%
     \ifx\l@expl@options@clist\@empty
@@ -1225,7 +1225,7 @@
        \expandafter\expandafter\expandafter
          {\expandafter\l@expl@options@clist\expandafter,\CurrentOption}
     \fi
-  }
+  }%
 \ProcessOptions\relax
 \ifodd\l@expl@check@declarations@bool
   \chardef\l@expl@enable@debug@bool=1 %
@@ -1250,23 +1250,23 @@
   {%
     \ProvidesPackage{#1}[#2 \ifx\relax#3\relax\else v#3\space\fi #4]%
     \ExplSyntaxOn
-  }
+  }%
 \protected\def\ProvidesExplClass#1#2#3#4%
   {%
     \ProvidesClass{#1}[#2 \ifx\relax#3\relax\else v#3\space\fi #4]%
     \ExplSyntaxOn
-  }
+  }%
 \protected\def\ProvidesExplFile#1#2#3#4%
   {%
     \ProvidesFile{#1}[#2 \ifx\relax#3\relax\else v#3\space\fi #4]%
     \ExplSyntaxOn
-  }
+  }%
 %    \end{macrocode}
 % \end{macro}
 %
 %  Load the business end: this leaves \cs{expl3} syntax on.
 %    \begin{macrocode}
-\input{expl3-code.tex}
+\input{expl3-code.tex}%
 %    \end{macrocode}
 %
 % A check that the bootstrap code did not abort loading: if it did,