Honor weapon .pickup return value.

For FreeCS this means CT-team wil no longer be able to pickup the bomb.

src/server/weapons.qc

@@ -163,8 +163,8 @@ Weapons_AddItem(base_player pl, int w, int startammo)
 			if (!value)
 				return value;
 		} else {
-			/* new to our arsenal, so always return TRUE */
-			g_weapons[w].pickup(TRUE, startammo);
+			/* new to our arsenal */
+			if (g_weapons[w].pickup(TRUE, startammo) == TRUE) {
 				pl.g_items |= g_weapons[w].id;
 				value = TRUE;
 
@@ -175,6 +175,10 @@ Weapons_AddItem(base_player pl, int w, int startammo)
 				} else {
 					Weapons_PickupNotify(pl, w);
 				}
+			} else {
+				/* cannot pickup this weapon (weapon says no) */
+				return FALSE;
+			}
 		}
 	}