Fix oversight in earlier change

gcc/ada/ChangeLog:
	* gcc-interface/decl.c (gnat_to_gnu_entity) <Fixed_Point_Type>: Put
	back the "else" unduly removed.

gcc/ada/gcc-interface/decl.c

@@ -1764,6 +1764,7 @@ gnat_to_gnu_entity (Entity_Id gnat_entity, tree gnu_expr, bool definition)
 	/* Use the arbitrary scale factor description.  Note that we support
 	   a Small_Value whose magnitude is larger than 64-bit even on 32-bit
 	   platforms, so we unconditionally use a (dummy) 128-bit type.  */
+	else
 	  {
 	    const Uint gnat_num = Norm_Num (gnat_small_value);
 	    const Uint gnat_den = Norm_Den (gnat_small_value);