Mostly cosmetic changes

arch/arm/src/armv7-a/arm_schedulesigaction.c

@@ -75,7 +75,7 @@
  *   This function is called by the OS when one or more
  *   signal handling actions have been queued for execution.
  *   The architecture specific code must configure things so
- *   that the 'igdeliver' callback is executed on the thread
+ *   that the 'sigdeliver' callback is executed on the thread
  *   specified by 'tcb' as soon as possible.
  *
  *   This function may be called from interrupt handling logic.

drivers/serial/serial.c

@@ -427,6 +427,7 @@ static ssize_t uart_write(FAR struct file *filep, FAR const char *buffer,
               ret = uart_putxmitchar(dev, '\r', oktoblock);
               if (ret < 0)
                 {
+                  nwritten = ret;
                   break;
                 }
             }

libc/stdio/lib_rawsostream.c

@@ -54,8 +54,9 @@
 static void rawoutstream_putc(FAR struct lib_outstream_s *this, int ch)
 {
   FAR struct lib_rawoutstream_s *rthis = (FAR struct lib_rawoutstream_s *)this;
-  int nwritten;
   char buffer = ch;
+  int nwritten;
+  int errcode;
 
   DEBUGASSERT(this && rthis->fd >= 0);
 
@@ -77,9 +78,10 @@ static void rawoutstream_putc(FAR struct lib_outstream_s *this, int ch)
        * return values from write().
        */
 
+      errcode = get_errno();
       DEBUGASSERT(nwritten < 0);
     }
-  while (get_errno() == EINTR);
+  while (errcode == EINTR);
 }
 
 /****************************************************************************

sched/signal/sig_deliver.c

@@ -51,7 +51,7 @@
 #include "signal/signal.h"
 
 /****************************************************************************
- * Definitions
+ * Pre-processor Definitions
  ****************************************************************************/
 
 /****************************************************************************
@@ -184,4 +184,3 @@ void sig_deliver(FAR struct tcb_s *stcb)
   stcb->pterrno = saved_errno;
   sched_unlock();
 }
-