patch 8.1.0376: compiler warning for uninitialized variable

Problem:    Compiler warning for uninitialized variable. (Tony Mechelynck)
Solution:   Initialize the variable.
diff --git a/src/screen.c b/src/screen.c
index 2586ad0..51f53c3 100644
--- a/src/screen.c
+++ b/src/screen.c
@@ -3147,7 +3147,7 @@
     static linenr_T capcol_lnum = 0;	/* line number where "cap_col" used */
     int		cur_checked_col = 0;	/* checked column for current line */
 #endif
-    int		extra_check;		/* has syntax or linebreak */
+    int		extra_check = 0;	// has syntax or linebreak
 #ifdef FEAT_MBYTE
     int		multi_attr = 0;		/* attributes desired by multibyte */
     int		mb_l = 1;		/* multi-byte byte length */
@@ -3271,8 +3271,6 @@
 	 */
 #ifdef FEAT_LINEBREAK
 	extra_check = wp->w_p_lbr;
-#else
-	extra_check = 0;
 #endif
 #ifdef FEAT_SYN_HL
 	if (syntax_present(wp) && !wp->w_s->b_syn_error
diff --git a/src/version.c b/src/version.c
index c103339..89a134b 100644
--- a/src/version.c
+++ b/src/version.c
@@ -795,6 +795,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    376,
+/**/
     375,
 /**/
     374,