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Remove spurious semicolons from macros; their upset compilers that don't like
mixing declarations and code (I accidentally tried to compile it with one
such).

[originally from svn r7313]

--- a/unfinished/sokoban.c

+++ b/unfinished/sokoban.c

@@ -99,8 +99,8 @@

 #define BARREL_LABEL(b) ( (b)>='A'&&(b)<='Z' ? (b) : \

                           (b)>=1 && (b)<=26 ? (b)+('A'-1) : 0 )

-#define DX(d) (d == 0 ? -1 : d == 2 ? +1 : 0);

-#define DY(d) (d == 1 ? -1 : d == 3 ? +1 : 0);

+#define DX(d) (d == 0 ? -1 : d == 2 ? +1 : 0)

+#define DY(d) (d == 1 ? -1 : d == 3 ? +1 : 0)

 #define FLASH_LENGTH 0.3F