objc.exp (objc_libgcc_s_path): Set objc_libgcc_s_path instead of appending to it.

gcc/testsuite/
	* lib/objc.exp (objc_libgcc_s_path): Set objc_libgcc_s_path
	instead of appending to it.

From-SVN: r131219

gcc/testsuite/ChangeLog

+2007-12-29  Richard Sandiford  <rsandifo@nildram.co.uk>
+
+	* lib/objc.exp (objc_libgcc_s_path): Set objc_libgcc_s_path
+	instead of appending to it.
+
 2007-12-27  Dorit Nuzman  <dorit@il.ibm.com>
 
 	PR tree-optimization/34591

gcc/testsuite/lib/objc.exp

@@ -115,7 +115,7 @@ proc objc_init { args } {
 
     objc_maybe_build_wrapper "${tmpdir}/objc-testglue.o"
 
-    append objc_libgcc_s_path [gcc-set-multilib-library-path $OBJC_UNDER_TEST]
+    set objc_libgcc_s_path [gcc-set-multilib-library-path $OBJC_UNDER_TEST]
 }
 
 proc objc_target_compile { source dest type options } {