Addressed more issues raised by splint.

src/include/pv-internal.h

@@ -223,7 +223,7 @@ struct pvstate_s {
 	 * to the output when splice() is not available.
 	 *
 	 * If buffer_size is smaller than pv__target_bufsize, then
-	 * pv_transfer will try to reallocate transfer_buffer to make
+	 * pv_transfer() will try to reallocate transfer_buffer to make
 	 * buffer_size equal to pv__target_bufsize.
 	 *
 	 * Data from the input files is read into the buffer; read_position
@@ -233,7 +233,7 @@ struct pvstate_s {
 	 * is the offset in the buffer that we've written data up to.  It
 	 * will always be less than or equal to read_position.
 	 */
-	/*@keep@*/ /*@null@*/ char *transfer_buffer;	 /* data transfer buffer */
+	/*@only@*/ /*@null@*/ char *transfer_buffer;	 /* data transfer buffer */
 	size_t buffer_size;		 /* size of buffer */
 	size_t read_position;		 /* amount of data in buffer */
 	size_t write_position;		 /* buffered data written */

src/pv/string.c

@@ -160,9 +160,9 @@ char *pv_strdup(const char *original)
 void *pv_memrchr(const void *buffer, int match, size_t length)
 {
 #ifdef HAVE_MEMRCHR
-	/*@-unrecog @*/ /* splint doesn't know of memrchr() */
+	/*@-unrecog @ *//* splint doesn't know of memrchr() */
 	return memrchr(buffer, match, length);
-	/*@+unrecog @*/
+	/*@+unrecog @ */
 #else
 	unsigned char *ptr;