patch 8.2.4378: incsearch HL broken when calling searchcount in 'tabLine'

Problem:    Incsearch highlight broken when calling searchcount() in 'tabLine'
            function. (Mirko Palmer)
Solution:   Save and restore the incsearch state. (Christian Brabandt,
            closes #9763, closes #9633)
diff --git a/src/version.c b/src/version.c
index 17bc3f7..4b2ac38 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    4378,
+/**/
     4377,
 /**/
     4376,