Fix:	SE043

Problem:
	Thowing darts, daggers etc when not wielding a weapon causes
	a segmentation fault.

Reported by:
	Peter Makholm, peter@makholm.net

Compatible with:
	Slash'EM 0.0.6E0

Author: J. Ali Harlow, ali@avrc.city.ac.uk

Date:	18 Jan 2000

*** src/dothrow.c.orig	Mon Jan 17 13:29:50 2000
--- src/dothrow.c	Tue Jan 18 15:10:03 2000
***************
*** 103,112 ****
  	    /* ...or is using a good weapon... */
  	    /* Elven Craftsmanship makes for light, quick bows */
  	    if (obj->otyp == ELVEN_ARROW && !obj->cursed && !rn2(3)) multishot++;
! 	    if (launcher->otyp == ELVEN_BOW && !launcher->cursed && !rn2(3)) multishot++;
  
  	    /* 1/3 of object enchantment */
! 	    if (launcher->spe > 1) multishot += (long) rounddiv(launcher->spe,3);
  	    
  	    /* ...or is using a special weapon for their role... */
  	    switch (Role_switch) {
--- 103,115 ----
  	    /* ...or is using a good weapon... */
  	    /* Elven Craftsmanship makes for light, quick bows */
  	    if (obj->otyp == ELVEN_ARROW && !obj->cursed && !rn2(3)) multishot++;
! 	    if (launcher && launcher->otyp == ELVEN_BOW &&
! 	      !launcher->cursed && !rn2(3))
! 		multishot++;
  
  	    /* 1/3 of object enchantment */
! 	    if (launcher && launcher->spe > 1)
! 		multishot += (long) rounddiv(launcher->spe,3);
  	    
  	    /* ...or is using a special weapon for their role... */
  	    switch (Role_switch) {
***************
*** 151,163 ****
  	    /* Rate of fire is intrinsic to the weapon - cannot be user selected
  	     * except via altmode
  	     */
! 	    if (objects[(launcher->otyp)].oc_rof) 
! 		multishot += (objects[(launcher->otyp)].oc_rof - 1);
! 	    if (launcher->altmode == WP_MODE_SINGLE) /* weapons switchable b/w full/semi auto */
! 	    	multishot = 1;
! 	    else if (launcher->altmode == WP_MODE_BURST)
! 	    	multishot = ((multishot > 3) ? (multishot / 3) : 1);
! 	    /* else it is auto == no change */
  #endif
  	}
  
--- 154,170 ----
  	    /* Rate of fire is intrinsic to the weapon - cannot be user selected
  	     * except via altmode
  	     */
! 	    if (launcher)
! 	    {
! 		if (objects[(launcher->otyp)].oc_rof) 
! 		    multishot += (objects[(launcher->otyp)].oc_rof - 1);
! 		if (launcher->altmode == WP_MODE_SINGLE)
! 		  /* weapons switchable b/w full/semi auto */
! 		    multishot = 1;
! 		else if (launcher->altmode == WP_MODE_BURST)
! 		    multishot = ((multishot > 3) ? (multishot / 3) : 1);
! 		/* else it is auto == no change */
! 	    }
  #endif
  	}