Formatting fix

man3/bindresvport.3

@@ -20,7 +20,7 @@ port, that is, a
 port number in the range 0-1023.
 The routine returns 0 if it is successful,
 otherwise \-1 is returned and
-.B errno
+.I errno
 set to reflect the cause of the error.
 .LP
 Only root can bind to a privileged port; this call will fail for any

man3/catopen.3

@@ -109,7 +109,7 @@ returns a message catalog descriptor of type
 on success.
 On failure, it returns (nl_catd) \-1
 and sets
-.B errno
+.I errno
 to indicate the error. The possible error values include all
 possible values for the
 .I open()