[MIRROR] Converts a shitload of istypes to their more concise macros [MDB IGNORE] (#15702)

Converts a shitload of istypes to their more concise macros

Co-authored-by: Seth Scherer <supernovaa41@gmx.com>
Co-authored-by: GoldenAlpharex <jerego1234@hotmail.com>

code/modules/admin/view_variables/debug_variables.dm

@@ -55,7 +55,7 @@
 				<tr><td>[M.c]</td><td>[M.f]</td><td>1</td></tr>
 			</tbody>
 			</table></td><td class='rbrak'>&nbsp;</td></tr></tbody></table></span>"} //TODO link to modify_transform wrapper for all matrices
-	else if (istype(value, /datum))
+	else if (isdatum(value))
 		var/datum/DV = value
 		if ("[DV]" != "[DV.type]") //if the thing as a name var, lets use it.
 			item = "[name_part] = <a href='?_src_=vars;[HrefToken()];Vars=[REF(value)]'>[DV] [DV.type] [REF(value)]</a>"

code/modules/admin/view_variables/get_variables.dm

@@ -28,10 +28,10 @@
 	else if(istype(var_value, /client))
 		. = VV_CLIENT
 
-	else if(istype(var_value, /datum/weakref))
+	else if(isweakref(var_value))
 		. = VV_WEAKREF
 
-	else if(istype(var_value, /datum))
+	else if(isdatum(var_value))
 		. = VV_DATUM_REFERENCE
 
 	else if(ispath(var_value))

code/modules/admin/view_variables/reference_tracking.dm

@@ -82,7 +82,7 @@
 	CHECK_TICK
 	#endif
 
-	if(istype(potential_container, /datum))
+	if(isdatum(potential_container))
 		var/datum/datum_container = potential_container
 		if(datum_container.last_find_references == search_time)
 			return

code/modules/admin/view_variables/topic.dm

@@ -5,7 +5,7 @@
 		return
 	var/target = GET_VV_TARGET
 	vv_do_basic(target, href_list, href)
-	if(istype(target, /datum))
+	if(isdatum(target))
 		var/datum/D = target
 		D.vv_do_topic(href_list)
 	else if(islist(target))
@@ -117,6 +117,6 @@
 	//Finally, refresh if something modified the list.
 	if(href_list["datumrefresh"])
 		var/datum/DAT = locate(href_list["datumrefresh"])
-		if(istype(DAT, /datum) || istype(DAT, /client) || islist(DAT))
+		if(isdatum(DAT) || istype(DAT, /client) || islist(DAT))
 			debug_variables(DAT)