Update parity_wallet_bug_1.sol

Fixing compiler version

dataset/access_control/parity_wallet_bug_1.sol

@@ -15,7 +15,7 @@
 // some number (specified in constructor) of the set of owners (specified in the constructor, modifiable) before the
 // interior is executed.
 
-pragma solidity ^0.4.9;
+pragma solidity 0.4.9; /* originally ^0.4.9, but doesn't compile with ^0.4.11 */
 
 contract WalletEvents {
   // EVENTS
@@ -466,4 +466,4 @@ contract Wallet is WalletEvents {
 
   // list of owners
   uint[256] m_owners;
-}
+}