kvx: gas: fix leak

gas/ChangeLog:

	* config/tc-kvx.c (md_apply_fix): Free memory at this end.

gas/config/tc-kvx.c

diff --git a/gas/config/tc-kvx.c b/gas/config/tc-kvx.c
index cfd9c68..b864b95 100644
--- a/gas/config/tc-kvx.c
+++ b/gas/config/tc-kvx.c
@@ -1825,6 +1825,7 @@
 		    fixP->fx_r_type);
 	}
     }
+  xfree (rel);
 }
 
 /*