refactor(style): code review suggestions

courtesy @riccardopersiani

Co-Authored-By: Riccardo Persiani <[email protected]>

Author: D-Nice

oraclizeAPI_0.4.25.sol

@@ -351,7 +351,7 @@ contract usingOraclize {
     OraclizeIBytes oraclizeBytes;
 
     modifier oraclizeAPI {
-        if((address(OAR)==0)||(getCodeSize(address(OAR))==0))
+         if((address(OAR) == 0) || (getCodeSize(address(OAR)) == 0))
             oraclize_setNetwork(networkID_auto);
 
         address oraclizeConnector = OAR.getAddress();
@@ -366,12 +366,12 @@ contract usingOraclize {
         _;
     }
 
-    function oraclize_setNetwork(uint8 networkID) internal returns(bool){
+     function oraclize_setNetwork(uint8 networkID) internal returns(bool) {
         return oraclize_setNetwork();
         networkID; // silence the warning and remain backwards compatible
     }
-    function oraclize_setNetwork() internal returns(bool){
-        if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet
+     function oraclize_setNetwork() internal returns(bool) {
+         if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed) > 0) { //mainnet
             OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed);
             oraclize_setNetworkName("eth_mainnet");
             return true;