Unwanted space after using a glossary term

The unwanted space comes from \defglsdisplayfirst of glossaries.sty 2014/01/20 v4.03, see the line marked with % <==:

\newcommand*{\defglsdisplayfirst}[2][\glsdefaulttype]{%
  \GlossariesWarning{\string\defglsdisplayfirst\space is now obsolete.^^J
  Use \string\defglsentryfmt\space instead}%
  \expandafter\def\csname gls@#1@displayfirst\endcsname##1##2##3##4{#2}%
  \edef\@gls@doentrydef{%
    \noexpand\defglsentryfmt[#1]{%
      \noexpand\ifcsdef{gls@#1@display}%
      {%
        \noexpand\@@gls@default@entryfmt
          {\noexpand\csuse{gls@#1@displayfirst}}
          {\noexpand\csuse{gls@#1@display}}%
      }%
      {%
        \noexpand\@@gls@default@entryfmt
          {\noexpand\csuse{gls@#1@displayfirst}}%
          {\noexpand\glsdisplay} % <==
      }%
    }%  
  }%
  \@gls@doentrydef
}

As workaround, the definition without the unwanted space:

\usepackage[...]{glossaries}
\makeatletter
\renewcommand*{\defglsdisplayfirst}[2][\glsdefaulttype]{%
  \GlossariesWarning{\string\defglsdisplayfirst\space is now obsolete.^^J
  Use \string\defglsentryfmt\space instead}%
  \expandafter\def\csname gls@#1@displayfirst\endcsname##1##2##3##4{#2}%
  \edef\@gls@doentrydef{%
    \noexpand\defglsentryfmt[#1]{%
      \noexpand\ifcsdef{gls@#1@display}%
      {%
        \noexpand\@@gls@default@entryfmt
          {\noexpand\csuse{gls@#1@displayfirst}}
          {\noexpand\csuse{gls@#1@display}}%
      }%
      {%
        \noexpand\@@gls@default@entryfmt
          {\noexpand\csuse{gls@#1@displayfirst}}%
          {\noexpand\glsdisplay}% without unwanted space
      }%
    }%  
  }%
  \@gls@doentrydef
}
\makeatother