Automatically merged updates to draft EIP(s) 2535 (#2906)

Hi, I'm a bot! This change was automatically merged because:

 - It only modifies existing Draft or Last Call EIP(s)
 - The PR was approved or written by at least one author of each modified EIP
 - The build is passing

EIPS/eip-2535.md

@@ -43,6 +43,7 @@ Here is a simple example of a diamond's fallback function:
 // function if a facet is found and return any value.
 fallback() external payable {  
   address facet = selectorTofacet[msg.sig];  
+  require(facet != address(0));
   // Execute external function from facet using delegatecall and return any value.
   assembly {    
     calldatacopy(0, 0, calldatasize())