Typo fix

Noticed by Tamar (thanks).

2018-08-02  Richard Sandiford  <richard.sandiford@arm.com>

gcc/
	* genemit.c (print_overload_test): Fix typo.

From-SVN: r263262

gcc/ChangeLog

+2018-08-02  Richard Sandiford  <richard.sandiford@arm.com>
+
+	* genemit.c (print_overload_test): Fix typo.
+
 2018-08-02  Richard Biener  <rguenther@suse.de>
 
 	PR c++/86763

gcc/genemit.c

@@ -761,7 +761,7 @@ print_overload_arguments (overloaded_name *oname)
     printf ("%s%s arg%d", i == 0 ? "" : ", ", oname->arg_types[i], i);
 }
 
-/* Print code to test whether INSTANCE should be chosne, given that
+/* Print code to test whether INSTANCE should be chosen, given that
    argument N of the overload is available as "arg<N>".  */
 
 static void