always return full amt

contracts/plugins/trading/DutchTradeRouter.sol

@@ -77,10 +77,10 @@ contract DutchTradeRouter is IDutchTradeCallee {
 
     function _sendBalanceTo(IERC20 token, address to) internal {
         uint256 bal = token.balanceOf(address(this));
-        if (bal <= 1) {
+        if (bal == 0) {
             return;
         }
-        token.safeTransfer(to, bal - 1);
+        token.safeTransfer(to, bal);
     }
 
     // Places a bid on a Dutch auction

test/Recollateralization.test.ts

@@ -3309,7 +3309,7 @@ describe(`Recollateralization - P${IMPLEMENTATION}`, () => {
             expect(await trade1.canSettle()).to.equal(false)
             expect(await trade1.status()).to.equal(2) // Status.CLOSED
             expect(await trade1.bidder()).to.equal(router.address)
-            expect(await token0.balanceOf(addr1.address)).to.equal(initialBal.sub(1))
+            expect(await token0.balanceOf(addr1.address)).to.equal(initialBal)
 
             const expected = divCeil(
               await dutchBuyAmount(

test/Revenues.test.ts

@@ -3639,9 +3639,7 @@ describe(`Revenues - P${IMPLEMENTATION}`, () => {
           expect(await trade.canSettle()).to.equal(false)
           expect(await trade.status()).to.equal(2) // Status.CLOSED
           expect(await trade.bidder()).to.equal(router.address)
-          expect(await token0.balanceOf(addr1.address)).to.equal(
-            initialBal.sub(issueAmount.div(4)).sub(1)
-          )
+          expect(await token0.balanceOf(addr1.address)).to.equal(initialBal.sub(issueAmount.div(4)))
 
           const expected = await dutchBuyAmount(
             fp(auctionLength).div(auctionLength), // last possible second