some tweaks

.gitignore

@@ -7,6 +7,7 @@ mkp224o
 
 # garbage
 configure
+configure~
 GNUmakefile
 GNUmakefile.in.bak
 config.status

worker_batch.inc.h

@@ -21,6 +21,8 @@ void *worker_batch(void *task)
 
 #ifdef STATISTICS
 	struct statstruct *st = (struct statstruct *)task;
+#else
+	(void) task;
 #endif
 
 	PREFILTER

worker_batch_pass.inc.h

@@ -22,6 +22,8 @@ void *worker_batch_pass(void *task)
 
 #ifdef STATISTICS
 	struct statstruct *st = (struct statstruct *)task;
+#else
+	(void) task;
 #endif
 
 	PREFILTER

worker_slow.inc.h

@@ -17,6 +17,7 @@ void *worker_slow(void *task)
 #else
 	(void) task;
 #endif
+
 	PREFILTER
 
 	memcpy(secret,skprefix,SKPREFIX_SIZE);