warning diagnostics for unused locals

std/mem/heap/heap.bro

@@ -1,9 +0,0 @@
-mem :: import ".."
-
-alloc func(size usize) ?*mut u8 {
-	return mem.alloc(mem.heap, size, 1)
-}
-
-free func(memory ?*mut u8) void {
-	mem.free(mem.heap, memory, 0, 1)
-}

std/mem/mem.bro

@@ -8,10 +8,10 @@ Allocator :: struct {
 
 heap Allocator :: Allocator {
 	context = none,
-	alloc = func(context ?*mut anyopaque, size usize, alignment usize) ?*mut u8 {
+	alloc = func(_ ?*mut anyopaque, size usize, _ usize) ?*mut u8 {
 		return ptr_cast(u8, c.malloc(size))
 	},
-	free = func(context ?*mut anyopaque, memory ?*mut u8, size usize, alignment usize) void {
+	free = func(_ ?*mut anyopaque, memory ?*mut u8, _ usize, _ usize) void {
 		c.free(memory)
 	},
 }