gcc warning fix fox: fko_decode.c:43:17: warning: variable ‘edata_size’ set but not used [-Wunused-but-set-variable]

lib/fko_decode.c

@@ -40,7 +40,7 @@ int
 fko_decode_spa_data(fko_ctx_t ctx)
 {
     char       *tbuf, *ndx;
-    int         edata_size, t_size;
+    int         t_size;
 
     /* Check for required data.
     */
@@ -48,8 +48,6 @@ fko_decode_spa_data(fko_ctx_t ctx)
       || strlen(ctx->encoded_msg) < MIN_SPA_ENCODED_MSG_SIZE)
         return(FKO_ERROR_INVALID_DATA);
 
-    edata_size = strlen(ctx->encoded_msg);
-
     /* Move the Digest to its place in the context.
     */
     ndx = strrchr(ctx->encoded_msg, ':'); /* Find the last : in the data */