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cleanup: remove temporary variables

we can copy them over to m before we copy m to p.

--- a/mbox.c

+++ b/mbox.c

@@ -342,8 +342,7 @@

 static Mesg*

 load(char *name, char *digest, int ins)

 {

-	Mesg *m, *p, **c;

-	int nc, ns;

+	Mesg *m, *p;

 	if(strncmp(name, mbox.path, strlen(mbox.path)) == 0)

 		name += strlen(mbox.path);

@@ -354,17 +353,14 @@

 		goto error;

 	/* if we already have a dummy, populate it */

 	if((p = lookupid(m->messageid)) != nil){

-		c = p->child;

-		nc = p->nchild;

-		ns = p->nsub;

+		m->child = p->child;

+		m->nchild = p->nchild;

+		m->nsub = p->nsub;

 		mesgclear(p);

 		memcpy(p, m, sizeof(*p));

 		free(m);

-

 		m = p;

-		m->child = c;

-		m->nchild = nc;

-		m->nsub = ns;

+

 	}else

 		addmesg(m, ins);