Apply suggestions from code review

Co-authored-by: SteelSlayer <42044220+SteelSlayer@users.noreply.github.com>

code/__HELPERS/mob_helpers.dm

@@ -402,9 +402,8 @@
 	var/atom/Uloc = user.loc
 
 	var/drifting = FALSE
-	if(!allow_moving)
-		if(!user.Process_Spacemove(0) && user.inertia_dir)
-			drifting = TRUE
+	if(!allow_moving && !user.Process_Spacemove(0) && user.inertia_dir)
+		drifting = TRUE
 
 	var/holding = user.get_active_hand()
 
@@ -434,7 +433,7 @@
 			if(drifting && !user.inertia_dir)
 				drifting = FALSE
 				Uloc = user.loc
-			if((!drifting && user.loc != Uloc))
+			if(!drifting && user.loc != Uloc)
 				. = FALSE
 				break
 
@@ -446,10 +445,9 @@
 			. = FALSE
 			break
 
-		if(must_be_held)
-			if(target.loc != user)
-				. = FALSE
-				break
+		if(must_be_held && target.loc != user)
+			. = FALSE
+			break
 
 		if(needhand)
 			//This might seem like an odd check, but you can still need a hand even when it's empty

code/modules/projectiles/ammunition.dm

@@ -129,7 +129,7 @@
 	var/multi_sprite_step = AMMO_MULTI_SPRITE_STEP_NONE // see update_icon_state() for details
 	var/caliber
 	var/multiload = 1
-	var/slow_loading = 0
+	var/slow_loading = FALSE
 	var/list/initial_mats //For calculating refund values.
 
 /obj/item/ammo_box/Initialize(mapload)

code/modules/projectiles/ammunition/magazines.dm

@@ -259,7 +259,7 @@
 	max_ammo = 20
 	multi_sprite_step = 4
 	multiload = 0
-	slow_loading = 1
+	slow_loading = TRUE
 	w_class = WEIGHT_CLASS_NORMAL
 	///A var to check if the mag is being loaded
 	var/being_loaded = FALSE