10l to myself for being overzealous with $cross_prefix

Originally committed as revision 5465 to svn://svn.ffmpeg.org/ffmpeg/trunk

configure

@@ -129,12 +129,12 @@ temp_extralibs(){
 
 check_cc(){
     cat >$TMPC
-    ${cross_prefix}$cc $CFLAGS "$@" -c -o $TMPO $TMPC >/dev/null 2>&1
+    $cc $CFLAGS "$@" -c -o $TMPO $TMPC >/dev/null 2>&1
 }
 
 check_ld(){
     cat >$TMPC
-    ${cross_prefix}$cc $CFLAGS $LDFLAGS "$@" -o $TMPE $TMPC $extralibs >/dev/null 2>&1
+    $cc $CFLAGS $LDFLAGS "$@" -o $TMPE $TMPC $extralibs >/dev/null 2>&1
 }
 
 check_cflags(){