shithub: moonfish

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fix small bug handling UCI

--- a/main.c

+++ b/main.c

@@ -178,6 +178,11 @@

 			else if (!strcmp(arg, "fen"))

 			{

 				arg = strtok(NULL, "\r\n");

+				if (arg == NULL)

+				{

+					fprintf(stderr, "incomplete 'position fen' command\n");

+					return 1;

+				}

 				moonfish_from_fen(&chess, arg);

 				arg = strstr(arg, "moves");

-- 

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