Push B in wild battle moves to Run

By devolov

Pushing B will now make the cursor move to Run in wild encounters.

---------------------------- engine/battle/core.asm ----------------------------
index f976674a..6cd7a419 100644
@@ -2085,11 +2085,18 @@ DisplayBattleMenu::
 	inc hl
 	ld a, $1
 	ld [hli], a ; wMaxMenuItem
 	ld [hl], D_RIGHT | A_BUTTON ; wMenuWatchedKeys
+	ld a, [wIsInBattle]
+	dec a
+	jr nz, .leftColumn_WaitForInput_BPressedIgnore
+	ld [hl], D_RIGHT | A_BUTTON | B_BUTTON ; wMenuWatchedKeys
+.leftColumn_WaitForInput_BPressedIgnore
 	call HandleMenuInput
 	bit BIT_D_RIGHT, a
 	jr nz, .rightColumn
+	bit BIT_B_BUTTON, a
+	jr nz, .BButtonPressed
 	jr .AButtonPressed ; the A button was pressed
 .rightColumn ; put cursor in right column of menu
 	ld a, [wBattleType]
 	cp BATTLE_TYPE_SAFARI
@@ -2117,16 +2124,28 @@ DisplayBattleMenu::
 	inc hl
 	inc hl
 	ld a, $1
 	ld [hli], a ; wMaxMenuItem
+	ld a, [wIsInBattle]
+	dec a
 	ld a, D_LEFT | A_BUTTON
+	jr nz, .rightColumn_WaitForInput_BPressedIgnore
+	ld a, D_LEFT | A_BUTTON | B_BUTTON
+.rightColumn_WaitForInput_BPressedIgnore
 	ld [hli], a ; wMenuWatchedKeys
 	call HandleMenuInput
 	bit 5, a ; check if left was pressed
-	jr nz, .leftColumn ; if left was pressed, jump
+	jp nz, .leftColumn ; if left was pressed, jump
+	bit BIT_B_BUTTON, a
+	jr nz, .BButtonPressed
 	ld a, [wCurrentMenuItem]
 	add $2 ; if we're in the right column, the actual id is +2
 	ld [wCurrentMenuItem], a
+	jr .AButtonPressed
+.BButtonPressed
+	ld a, $1
+	ld [wCurrentMenuItem], a
+	jr .rightColumn
 .AButtonPressed
 	call PlaceUnfilledArrowMenuCursor
 	ld a, [wBattleType]
 	cp BATTLE_TYPE_SAFARI