Make pv_format() static, as it is only used in one place (cppcheck recommendation).

src/include/pv-internal.h

@@ -628,9 +628,6 @@ pvdisplay_bytecount_t pv_formatter_previous_line(pvformatter_args_t);
 pvdisplay_bytecount_t pv_formatter_name(pvformatter_args_t);
 pvdisplay_bytecount_t pv_formatter_sgr(pvformatter_args_t);
 
-bool pv_format (pvprogramstatus_t, readonly_pvcontrol_t,
-		readonly_pvtransferstate_t, readonly_pvtransfercalc_t,
-		/*@null@ */ const char *, pvdisplay_t, bool, bool);
 void pv_display (pvprogramstatus_t, readonly_pvcontrol_t, pvtransientflags_t,
 		 readonly_pvtransferstate_t, pvtransfercalc_t,
 		 pvcursorstate_t, pvdisplay_t, /*@null@ */ pvdisplay_t, bool);

src/pv/display.c

@@ -998,9 +998,9 @@ static void pv__format_init(pvprogramstatus_t status, readonly_pvcontrol_t contr
  *
  * See pv__format_init for the adjustments that may be made to "status".
  */
-bool pv_format(pvprogramstatus_t status, readonly_pvcontrol_t control, readonly_pvtransferstate_t transfer,
-	       readonly_pvtransfercalc_t calc, /*@null@ */ const char *format_supplied, pvdisplay_t display,
-	       bool reinitialise, bool final)
+static bool pv_format(pvprogramstatus_t status, readonly_pvcontrol_t control, readonly_pvtransferstate_t transfer,
+		      readonly_pvtransfercalc_t calc, /*@null@ */ const char *format_supplied, pvdisplay_t display,
+		      bool reinitialise, bool final)
 {
 	struct pvdisplay_component_s *format_component_array;
 	char display_segments[PV_SIZEOF_FORMAT_SEGMENTS_BUF];	/* flawfinder: ignore - always bounded */