11622 clean up rarer mandoc lint warnings

*** 47,57 ****
  .\"
  .TH NANOSLEEP 3C "Mar 27, 2016"
  .SH NAME
  nanosleep, thrd_sleep \- high resolution sleep
  .SH SYNOPSIS
- .LP
  .nf
  #include <time.h>
  
  \fBint\fR \fBnanosleep\fR(\fBconst struct timespec *\fR\fIrqtp\fR,
       \fBstruct timespec *\fR\fIrmtp\fR);
--- 47,56 ----
*** 62,72 ****
  
  \fBint\fR \fBthrd_sleep\fR(\fBconst struct timespec *\fR\fIrqtp\fR,
       \fBstruct timespec *\fR\fIrmtp\fR);
  
  .SH DESCRIPTION
- .LP
  The \fBnanosleep()\fR and \fBthrd_sleep()\fR functions cause the current thread
  to be suspended from execution until either the time interval specified by the
  \fIrqtp\fR argument has elapsed or a signal is delivered to the calling thread
  and its action is to invoke a signal-catching function or to terminate the
  process. The suspension time may be longer than requested because the argument
--- 61,70 ----
*** 78,88 ****
  .sp
  .LP
  The use of the \fBnanosleep()\fR and \fBthrd_sleep()\fR functions has no effect
  on the action or blockage of any signal.
  .SH RETURN VALUES
- .LP
  If the \fBnanosleep()\fR or \fBthrd_sleep()\fR function returns because the
  requested time has elapsed, its return value is \fB0\fR.
  .sp
  .LP
  If the \fBnanosleep()\fR function returns because it has been interrupted by a
--- 76,85 ----
*** 96,106 ****
  .LP
  If \fBnanosleep()\fR fails, it returns \fB\(mi1\fR and sets \fBerrno\fR to
  indicate the error.
  .sp
  .LP
- 
  The
  .B thrd_sleep()
  function may fail for identical reasons as the
  .B nanosleep()
  function and returns \(mi1; however, the C11 standard does not define that
--- 93,102 ----
*** 109,119 ****
  .B errno
  being set or staying the same across a call to
  .B thrd_sleep() .
  
  .SH ERRORS
- .LP
  The \fBnanosleep()\fR function will fail if:
  .sp
  .ne 2
  .na
  \fB\fBEINTR\fR\fR
--- 105,114 ----
*** 140,150 ****
  .RS 10n
  The \fBnanosleep()\fR function is not supported by this implementation.
  .RE
  
  .SH ATTRIBUTES
- .LP
  See \fBattributes\fR(5) for descriptions of the following attributes:
  .sp
  
  .sp
  .TS
--- 135,144 ----
*** 159,165 ****
  _
  Standard        See \fBstandards\fR(5).
  .TE
  
  .SH SEE ALSO
- .LP
  \fBsleep\fR(3C), \fBtime.h\fR(3HEAD), \fBattributes\fR(5), \fBstandards\fR(5)
--- 153,158 ----