darwin, powerpc - fix whitespace in generated code.

NFC intended, this simply adds a missing tab to the
generaed code.

2019-05-17  Iain Sandoe  <iain@sandoe.co.uk>

        * config/rs6000/rs6000.c (macho_branch_islands): Fix bad indent
        on the generated code.

From-SVN: r271341

gcc/ChangeLog

+2019-05-17  Iain Sandoe  <iain@sandoe.co.uk>
+
+	* config/rs6000/rs6000.c (macho_branch_islands): Fix bad indent
+	on the generted code.
+
 2019-05-16  Martin Sebor  <msebor@redhat.com>
 
         * builtins.c (expand_builtin_atomic_always_lock_free): Quote

gcc/config/rs6000/rs6000.c

@@ -32986,7 +32986,7 @@ macho_branch_islands (void)
 	}
       else
 	{
-	  strcat (tmp_buf, ":\nlis r12,hi16(");
+	  strcat (tmp_buf, ":\n\tlis r12,hi16(");
 	  strcat (tmp_buf, name_buf);
 	  strcat (tmp_buf, ")\n\tori r12,r12,lo16(");
 	  strcat (tmp_buf, name_buf);