Optmizes handle_mutations_and_radiation

Saving about 90% CPU power on blank humanoids

code/game/dna/dna2_domutcheck.dm

@@ -32,7 +32,7 @@
 	var/mutation_active = M.dna.GetSEState(mutation.block)
 
 	// Sanity checks, don't skip.
-	if(!mutation.can_activate(M, flags) && mutation_active)
+	if(mutation_active && !mutation.can_activate(M, flags))
 		//testing("[M] - Failed to activate [gene.name] (can_activate fail).")
 		return FALSE
 
@@ -46,11 +46,7 @@
 		if(mutation_active)
 			//testing("[gene.name] activated!")
 			mutation.activate(M)
-			if(M)
-				M.active_mutations |= mutation.type
 		// If Gene is NOT active:
 		else
 			//testing("[gene.name] deactivated!")
 			mutation.deactivate(M)
-			if(M)
-				M.active_mutations -= mutation.type

code/game/dna/mutations/_mutations.dm

@@ -32,6 +32,7 @@
 // Called when the gene activates.  Do your magic here.
 /datum/mutation/proc/activate(mob/living/M)
 	M.gene_stability -= instability
+	M.active_mutations |= type // |= is probably not required but just in case
 	for(var/thing in traits_to_add)
 		ADD_TRAIT(M, thing, GENETIC_MUTATION)
 	if(length(activation_messages))
@@ -43,6 +44,7 @@
 // Only called when the block is deactivated.
 /datum/mutation/proc/deactivate(mob/living/M)
 	M.gene_stability += instability
+	M.active_mutations -= type
 	for(var/thing in traits_to_add)
 		REMOVE_TRAIT(M, thing, GENETIC_MUTATION)
 	if(length(deactivation_messages))