[evince] build: Fix unbalanced quote in configure script

[Bastien Nocera <hadess src gnome org>]

commit bf45fe7c7a4057b87cd24ec0b4be6a04e1e6dbd9
Author: Bastien Nocera <hadess hadess net>
Date:   Thu Jan 29 14:28:46 2015 +0100

    build: Fix unbalanced quote in configure script

 configure.ac |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 527ffd5..6146250 100644
--- a/configure.ac
+++ b/configure.ac
@@ -702,7 +702,7 @@ if test "x$enable_xps" = "xyes"; then
       AC_DEFINE([ENABLE_XPS], [1], [Enable support for XPS documents.])
    else
       enable_xps="no"
-      AC_MSG_WARN(["XPS support is disabled since libgxps (version >= $GXPS_REQUIRED) is needed])
+      AC_MSG_WARN([XPS support is disabled since libgxps (version >= $GXPS_REQUIRED) is needed])
    fi
 fi