[PATCH 4/4] COFF: correct function auxiliary symbol data clearing

[Jan Beulich]

It's unclear why the array part of the union was used there, when we're
dealing with a function. Originally, when 32-bit hosts and targets were
prevailing, the memset() in question ended up clearing the entire x_fcn,
while for 64-bit hosts/targets only x_lnnoptr would have been cleared.
Then a2c7ca15a560 ("Use stdint types in coff internal_auxent") made
things consistent, but imo in the wrong direction (and likely
unintentionally). Go back to what apparently was meant originally, using
the correct part of the union now.

--- a/gas/config/obj-coff.c
+++ b/gas/config/obj-coff.c
@@ -1351,8 +1351,8 @@ if(flag_debug) {//temp
 	      if (S_GET_NUMBER_AUXILIARY (symp) < 1)
 		S_SET_NUMBER_AUXILIARY (symp, 1);
 	      auxp = SYM_AUXENT (symp);
-	      memset (auxp->x_sym.x_fcnary.x_ary.x_dimen, 0,
-		      sizeof (auxp->x_sym.x_fcnary.x_ary.x_dimen));
+	      memset (&auxp->x_sym.x_fcnary.x_fcn, 0,
+		      sizeof (auxp->x_sym.x_fcnary.x_fcn));
 	    }
 
 	  if (S_GET_STORAGE_CLASS (symp) == C_EFCN