Address splint warnings.

src/include/options.h

@@ -43,7 +43,7 @@ struct opts_s {
 	size_t buffer_size;            /* buffer size, in bytes (0=default) */
 	off_t size;                    /* total size of data */
 	off_t error_skip_block;        /* skip block size, 0 for adaptive */
-	unsigned int remote;           /* PID of pv to update settings of */
+	pid_t remote;                  /* PID of pv to update settings of */
 	unsigned int skip_errors;      /* skip read errors counter */
 	pid_t watch_pid;	       /* process to watch fds of */
 	int watch_fd;		       /* fd to watch */

src/main/options.c

@@ -619,7 +619,7 @@ opts_t opts_parse(unsigned int argc, char **argv)
 			}
 			break;
 		case 'R':
-			opts->remote = pv_getnum_count(optarg, false);
+			opts->remote = (pid_t) pv_getnum_count(optarg, false);
 			break;
 		case 'P':
 			opts->pidfile = pv_strdup(optarg);

src/main/remote.c

@@ -57,10 +57,12 @@ struct remote_msg {
  * file associated with a particular process ID; it will be opened for
  * writing if "sender" is true.  Returns NULL on error.
  */
+/*@null@ */
+/*@dependent@ */
 static FILE *pv__control_file(char *filename, size_t bufsize, pid_t control_pid, bool sender)
 {
 	int open_flags, open_mode, control_fd;
-	FILE *control_fptr;
+	/*@dependent@ */ FILE *control_fptr = NULL;
 
 	open_flags = O_RDONLY;
 #ifdef O_NOFOLLOW
@@ -216,7 +218,7 @@ int pv_remote_set(opts_t opts, pvstate_t state)
 	 * Get the filename and file stream to use for remote control.
 	 */
 	memset(control_filename, 0, sizeof(control_filename));
-	control_fptr = pv__control_file(control_filename, sizeof(control_filename), getpid(), true);
+	control_fptr = pv__control_file(control_filename, sizeof(control_filename), (pid_t) getpid(), true);
 	if (NULL == control_fptr) {
 		pv_error(state, "%s", strerror(errno));
 		return PV_ERROREXIT_REMOTE_OR_PID;