fix a bug in some small changes to astxs utility

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@3656 65c4cc65-6c06-0410-ace0-fbb531ad65f3

contrib/scripts/astxs

@@ -137,7 +137,7 @@ exit if($args{nolink});
 
 
 
-$vars{MAINOBJ} ||= $base.o;
+$vars{MAINOBJ} ||= "$base.o";
 $bad = esystem("$vars{CC} $vars{SOLINK} -o $vars{LDFLAGS} ${base}.so $vars{MAINOBJ} $vars{EXTOBJ}") if(!$bad and !$args{installonly});
 exit -1 if($bad);