patch 9.0.2178: reg_executing() wrong for :normal with range

Problem:  reg_executing() returns wrong result in :normal with range
          when 'showcmd' is set (after 8.2.4705).
Solution: Reset "pending_end_reg_executing" when executing a register.

closes: #13707

Signed-off-by: zeertzjq <zeertzjq@outlook.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/globals.h b/src/globals.h
index c03fe97..b74ef35 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1377,7 +1377,7 @@
 EXTERN int reg_recording INIT(= 0);	// register for recording  or zero
 EXTERN int reg_executing INIT(= 0);	// register being executed or zero
 // Flag set when peeking a character and found the end of executed register
-EXTERN int pending_end_reg_executing INIT(= 0);
+EXTERN int pending_end_reg_executing INIT(= FALSE);
 
 // Set when a modifyOtherKeys sequence was seen, then simplified mappings will
 // no longer be used.  To be combined with modify_otherkeys_state.