patch 8.2.1568: prop_find() skips properties in the same line

Problem:    prop_find() skips properties in the same line if "skipstart" is
            used.
Solution:   Use "continue" instead of "break". (closes #6840)
diff --git a/src/version.c b/src/version.c
index e1d3b12..840c325 100644
--- a/src/version.c
+++ b/src/version.c
@@ -755,6 +755,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1568,
+/**/
     1567,
 /**/
     1566,