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11227 smb code needs smatch fixes

@@ -9,10 +9,11 @@
  * http://www.illumos.org/license/CDDL.
  */
 
 /*
  * Copyright 2018 Nexenta Systems, Inc.  All rights reserved.
+ * Copyright 2019 Joyent, Inc.
  */
 
 /*
  * Test & debug program for smb_msgbuf.c and smb_mbuf_marshaling.c
  */

@@ -62,11 +63,11 @@
                 printf("%02x ", *buf++);
 
                 idx++;
                 if ((idx & 3) == 0) {
                         *pa++ = ' ';
-                        putchar(' ');
+                        (void) putchar(' ');
                 }
                 if ((idx & 15) == 0) {
                         *pa = '\0';
                         printf("%s\n", ascii);
                 }

@@ -75,11 +76,11 @@
         if ((idx & 15) != 0) {
                 *pa = '\0';
                 /* column align the last ascii row */
                 while ((idx & 15) != 0) {
                         if ((idx & 3) == 0)
-                                putchar(' ');
+                                (void) putchar(' ');
                         printf("   ");
                         idx++;
                 }
                 printf("%s\n", ascii);
         }