Fixed issue with Old Man follower infinite pit fall

follower.asm

@@ -23,7 +23,7 @@ JSL SpritePrep_OldManFollower : NOP #2 : db $F0 ; BEQ
 org $9DFF18
 JSL SpriteDraw_OldManFollower
 org $9EE9BC
-JSL Follower_CheckMessageCollision
+JSL OldMan_WaitForCollision
 org $9EE9CC
 JSL OldMan_BecomeFollower : NOP #2
 
@@ -631,6 +631,15 @@ SpriteDraw_OldManFollower:
 dw 0,  0 : db $AC, $00, $00, $02
 dw 0,  8 : db $AE, $00, $00, $02
 
+OldMan_WaitForCollision:
+    PHA
+    LDA.w LinkIFrames : BEQ +
+        PLA : CLC
+        RTL
+    +
+    PLA
+    JML Follower_CheckMessageCollision
+
 OldMan_BecomeFollower:
     LDA.l FollowerTravelAllowed : CMP.b #$02 : BCC .set_follower_and_despawn
         PLA : PLA

ram.asm

@@ -231,6 +231,8 @@ CurrentYItem = $7E0303            ;
 AButtonAct = $7E0308              ; Bitfield for A-actions. $80 = Carry/toss | $02 Prayer | $01 = Tree pull
 CarryAct = $7E0309                ; Bitfield for carrying. $02 = Tossing | $01 = Lifting
                                   ;
+LinkIFrames = $7E031F             ; Countdown for Link's invincibility frames after taking damage.
+                                  ;
 LinkSwimDirection = $7E0340       ; Bitfield for swim direction. (.... udlr)
                                   ;
 LinkDeepWater = $7E0345           ; Set when Link is in deep water.
@@ -856,6 +858,8 @@ endmacro
 %assertRAM(UseY1, $7E0301)
 %assertRAM(CurrentYItem, $7E0303)
 %assertRAM(AButtonAct, $7E0308)
+%assertRAM(CarryAct, $7E0309)
+%assertRAM(LinkIFrames, $7E031F)
 %assertRAM(LinkSwimDirection, $7E0340)
 %assertRAM(LinkDeepWater, $7E0345)
 %assertRAM(TileActIce, $7E0348)