Fix build with glib2 >= 2.62
sipe-utils.c:304:3: error: 'GTimeVal' is deprecated: Use 'GDateTime' instead [-Werror,-Wdeprecated-declarations]
                GTimeVal currtime;

Index: configure
--- configure.orig
+++ configure
@@ -13120,7 +13120,7 @@ fi
 
 
 if test "x$enable_quality_check" = xyes; then :
-           QUALITY_CFLAGS="$QUALITY_CFLAGS -Werror -Wall"
+           QUALITY_CFLAGS="$QUALITY_CFLAGS -Wall"
 
 	 	 	 for newflag in \
 			"-Wextra" \