patch 8.2.3000: Vim9: warning for uninitialized variable

Problem:    Vim9: warning for uninitialized variable.
Solution:   Add initialization. (John Marriott)
diff --git a/src/version.c b/src/version.c
index 650382e..3e33c5d 100644
--- a/src/version.c
+++ b/src/version.c
@@ -751,6 +751,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    3000,
+/**/
     2999,
 /**/
     2998,
diff --git a/src/vim9compile.c b/src/vim9compile.c
index dbad31b..57e2311 100644
--- a/src/vim9compile.c
+++ b/src/vim9compile.c
@@ -9051,7 +9051,7 @@
     {
 	dfunc_T *dfunc = ((dfunc_T *)def_functions.ga_data)
 							 + ufunc->uf_dfunc_idx;
-	isn_T	*instr_dest;
+	isn_T	*instr_dest = NULL;
 
 	switch (compile_type)
 	{