fix(ci): Add zero check in getNextPriceAmount0Remove function

Author: notJoon

contract/p/gnoswap/gnsmath/sqrt_price_math.gno

@@ -54,6 +54,10 @@ func getNextPriceAmount0Add(
 func getNextPriceAmount0Remove(
 	currentSqrtPriceX96, liquidity, amountToRemove *u256.Uint,
 ) *u256.Uint {
+	if amountToRemove.IsZero() {
+		panic(errInvalidPoolSqrtPrice)
+	}
+
 	// liquidityShifted = liquidity << 96
 	liquidityShifted := u256.Zero().Lsh(liquidity, Q96_RESOLUTION)
 	// amountTimesSqrtPrice = amountToRemove * currentSqrtPriceX96

contract/p/gnoswap/gnsmath/sqrt_price_math_test.gno

@@ -207,6 +207,14 @@ func TestSqrtPriceMath_getNextPriceAmount0Remove(t *testing.T) {
 			shouldPanic:    true,
 			panicMsg:       errInvalidPoolSqrtPrice.Error(),
 		},
+		{
+			name:           "zero_amount_panics",
+			current:        u256.Zero(),
+			liquidity:      u256.NewUint(6416),
+			amountToRemove: u256.Zero(),
+			shouldPanic:    true,
+			panicMsg:       errInvalidPoolSqrtPrice.Error(),
+		},
 	}
 
 	for _, tt := range tests {