14107 '\0' not properly escaped in some manual pages

Reviewed by: Peter Tribble <peter.tribble@gmail.com>
Reviewed by: C Fraire <cfraire@me.com>
Reviewed by: Toomas Soome <tsoome@me.com>
Approved by: Richard Lowe <richlowe@richlowe.net>

usr/src/man/man1/ctfdump.1

@@ -11,7 +11,7 @@
 .\"
 .\" Copyright 2018, Joyent, Inc.
 .\"
-.Dd December 28, 2020
+.Dd September 20, 2021
 .Dt CTFDUMP 1
 .Os
 .Sh NAME
@@ -344,7 +344,7 @@ then the
 string's value is displayed.
 Note the following examples:
 .Bd -literal
-  [0] \0
+  [0] \e0
   [1] joyent_20151001T070028Z
   [25] char
   [30] long

usr/src/man/man3c/mbrtoc16.3c

@@ -11,7 +11,7 @@
 .\"
 .\" Copyright 2020 Robert Mustacchi
 .\"
-.Dd April 23, 2020
+.Dd September 20, 2021
 .Dt MBRTOC16 3C
 .Os
 .Sh NAME
@@ -323,7 +323,7 @@ main(void)
         size_t ret;
         const char *uchar_str = "\exf0\ex9f\ex92\exa9";
 
-        (void) memset(&mbs, '\0', sizeof (mbs));
+        (void) memset(&mbs, 0, sizeof (mbs));
         (void) setlocale(LC_CTYPE, "en_US.UTF-8");
         ret = mbrtoc16(&first, uchar_str, strlen(uchar_str), &mbs);
         if (ret != strlen(uchar_str)) {