Clean up bugs commented in the source code (#912)

Co-authored-by: Rangi <remy.oukaour+rangi42@gmail.com>

home/map.asm

@@ -146,12 +146,10 @@ LoadMetatiles::
 	ld e, l
 	ld d, h
 	; Set hl to the address of the current metatile data ([wTilesetBlocksAddress] + (a) tiles).
-	; This is buggy; it wraps around past 128 blocks.
-	; To fix, uncomment the line below.
-	add a ; Comment or delete this line to fix the above bug.
+; BUG: LoadMetatiles wraps around past 128 blocks (see docs/bugs_and_glitches.md)
+	add a
 	ld l, a
 	ld h, 0
-	; add hl, hl
 	add hl, hl
 	add hl, hl
 	add hl, hl
@@ -584,18 +582,16 @@ ReadObjectEvents::
 	call CopyMapObjectEvents
 
 ; get NUM_OBJECTS - [wCurMapObjectEventCount]
+; BUG: ReadObjectEvents overflows into wObjectMasks (see docs/bugs_and_glitches.md)
 	ld a, [wCurMapObjectEventCount]
 	ld c, a
-	ld a, NUM_OBJECTS ; - 1
+	ld a, NUM_OBJECTS
 	sub c
 	jr z, .skip
-	; jr c, .skip
 
 	; could have done "inc hl" instead
 	ld bc, 1
 	add hl, bc
-; Fill the remaining sprite IDs and y coords with 0 and -1, respectively.
-; Bleeds into wObjectMasks due to a bug.  Uncomment the above code to fix.
 	ld bc, MAPOBJECT_LENGTH
 .loop
 	ld [hl],  0