[test-suite] Fixed compiler error when compiling hexxagonboard.cpp using GCC11

[adata111]

Summary

The code for hexxagonboard.cpp used an ambiguous variable called "empty". This variable is already predefined by GCC 11.1.0 and hence the file doesn't get compiled using GCC11. The patch fixes this error by changing the variable name to "empty_var". The code now compiles successfully using both GCC 11.1.0 and the old version GCC 9.3.0

Co-author: @Shrill

[MatzeB]

LGTM

MultiSource/Applications/hexxagon/hexxagonboard.h

enum
   SCR_INFINITY = 32000
 };
 
 /* Hexxagon type */
 enum 
 {
   pl1 = 1,
   pl2,
-  empty,
+  empty_var,
   removed
 };
 
 int getHexxagonIndex(int x, int y);
 void initCloneLookups();
 void initJumpLookups();
 
 class HexxagonBoard

MultiSource/Applications/hexxagon/hexxagonboard.cpp

 {
   if(board.getBit(i))
   {
     if(color.getBit(i))
       return pl1;
     else
       return pl2;
   } else
-    return empty;
+    return empty_var;
 }
 
 int HexxagonBoard::applyMove(HexxagonMove &move)
 {
   board.setBit(move.to);
   color.setBit(move.to);
     
   color = color | clone_lookups[move.to];
for(int x = 1; x < 10; x++)
             cout << "o ";
         } else
           cout << ". ";
       }
     }
     cout << "\n";
   }
   
-  int empty = 61 - ((turn ? countBricks(1) : countBricks(2)) + 
+  int empty_var = 61 - ((turn ? countBricks(1) : countBricks(2)) + 
             (turn ? countBricks(2) : countBricks(1)));
   
   cout << "\nBricks: x " << (turn ? countBricks(1) : countBricks(2));
   cout << ", o " << (turn ? countBricks(2) : countBricks(1));
-  cout <<  ". Empty " << empty << ".\n";
+  cout <<  ". Empty " << empty_var << ".\n";
   cout << "Next to move: " << (turn ? "x" : "o");
   cout << (endOfGame() ? ", Game over." : "") << "\n";
 }