[testsuite][arm] Fix check_effective_target_vect_hw_misalign check.

2017-09-26  Christophe Lyon  <christophe.lyon@linaro.org>

	* lib/target-supports.exp (check_effective_target_vect_hw_misalign):
	Fix arm check.

From-SVN: r253187

gcc/testsuite/ChangeLog

+2017-09-26  Christophe Lyon  <christophe.lyon@linaro.org>
+
+	* lib/target-supports.exp (check_effective_target_vect_hw_misalign):
+	Fix arm check.
+
 2017-09-25  Jeff Law  <law@redhat.com>
 
 	* lib/target-supports.exp

gcc/testsuite/lib/target-supports.exp

@@ -5951,7 +5951,7 @@ proc check_effective_target_vect_hw_misalign { } {
 	  set et_vect_hw_misalign_saved($et_index) 1
 	}
 	if { [istarget arm*-*-*] } {
-	    set et_vect_hw_misalign_saved($et_index) ![check_effective_target_arm_vect_no_misalign]
+	    set et_vect_hw_misalign_saved($et_index) [expr ![check_effective_target_arm_vect_no_misalign]]
 	}
     }
     verbose "check_effective_target_vect_hw_misalign:\