Fix returning on error from vararg function `cmp_find_many()` not calling `va_end()`

Fortune for naka's current commit: Future blessing − 末吉

src/comp.c

@@ -25,14 +25,18 @@ int cmp_find_many(usize nhaystacks; const map_t *pIN needle, usize sizes[pOUT nh
 	va_start(v_haystacks, nhaystacks);
 
 	const map_t* pINOUT haystack;
+	register int rval=-1;
 	for(usize i=0;i<nhaystacks;i++)
 	{
 		usize *pOUT size = sizes + i;
 		haystack = va_arg(v_haystacks, const map_t* pIN);
 		if(!haystack || !haystack->origin) FATAL("haystack %lu was null or its origin was null", i);
-		if(!cmp_find(needle, haystack, size)) return (int)i;
+		if(!cmp_find(needle, haystack, size)) {
+			rval = (int)i;
+			break;
+		}
 	}
 
 	va_end(v_haystacks);	
-	return -1;
+	return rval;
 }