10703 smatch unreachable code checking needs reworking
Reviewed by: Toomas Soome <tsoome@me.com>
Reviewed by: Yuri Pankov <yuri.pankov@nexenta.com>

@@ -30,11 +30,11 @@
  * Portions of this source code were derived from Berkeley 4.3 BSD
  * under license from the Regents of the University of California.
  */
 
 /*
- * Copyright (c) 2018, Joyent, Inc.
+ * Copyright 2019 Joyent, Inc.
  */
 
 /*LINTLIBRARY*/
 
 #include        <sys/types.h>

@@ -440,11 +440,12 @@
         p1 = d1.dptr;
         p2 = d2.dptr;
         do
                 if (*p1++ != *p2++)
                         return (*--p1 - *--p2);
-        while (--n);
+        while (--n)
+                ;
         return (0);
 }
 
 int     hitab[16]
 /*

@@ -587,7 +588,6 @@
         return;
 
 bad:
         (void) printf("bad block\n");
         abort();
-        bzero(buf, PBLKSIZ);
 }