fix: Add missing zero length termination

QEDK · QEDK · commit 31dab1ee3da3 · 2022-08-11T14:53:22.000+04:00
diff --git a/contracts/lib/ExitPayloadReader.sol b/contracts/lib/ExitPayloadReader.sol
@@ -44,6 +44,8 @@ library ExitPayloadReader {
             src += WORD_SIZE;
             dest += WORD_SIZE;
         }
+        
+        if (len == 0) return;
 
         // left over bytes. Mask is used to remove unwanted bytes from the word
         uint256 mask = 256**(WORD_SIZE - len) - 1;

Original file line number	Diff line number	Diff line change
`@@ -44,6 +44,8 @@ library ExitPayloadReader {`
`44`	`44`	`src += WORD_SIZE;`
`45`	`45`	`dest += WORD_SIZE;`
`46`	`46`	`}`
	`47`	`+`
	`48`	`+ if (len == 0) return;`
`47`	`49`
`48`	`50`	`// left over bytes. Mask is used to remove unwanted bytes from the word`
`49`	`51`	`uint256 mask = 256**(WORD_SIZE - len) - 1;`