patch 8.2.3560: using freed memory with lambda

Problem:    Using freed memory with lambda.
Solution:   Do not free lines early, keep them until the expression is
            finished.
diff --git a/src/globals.h b/src/globals.h
index 4a6e027..948c35f 100644
--- a/src/globals.h
+++ b/src/globals.h
@@ -1867,8 +1867,8 @@
 // Passed to an eval() function to enable evaluation.
 EXTERN evalarg_T EVALARG_EVALUATE
 # ifdef DO_INIT
-	= {EVAL_EVALUATE, 0, NULL, NULL, NULL, NULL, {0, 0, 0, 0, NULL},
-					  {0, 0, 0, 0, NULL}, NULL, NULL, NULL}
+	= {EVAL_EVALUATE, 0, NULL, NULL, NULL, NULL, GA_EMPTY, GA_EMPTY, NULL,
+			 {0, 0, (int)sizeof(char_u *), 20, NULL}, 0, NULL}
 # endif
 	;
 #endif