patch 9.1.0871: getcellpixels() can be further improved

Problem:  getcellpixels() can be further improved
Solution: Fix floating point exception, implement getcellpixels() in the
          UI (mikoto2000)

closes: #16059

Signed-off-by: mikoto2000 <mikoto2000@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/version.c b/src/version.c
index ce6c38a..dbd5fc6 100644
--- a/src/version.c
+++ b/src/version.c
@@ -705,6 +705,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    871,
+/**/
     870,
 /**/
     869,