patch 8.1.1337: get empty text prop when splitting line just after text prop

Problem:    Get empty text prop when splitting line just after text prop.
Solution:   Do not create an empty text prop at the start of the line.
diff --git a/src/textprop.c b/src/textprop.c
index 8c1e46c..361ecb1 100644
--- a/src/textprop.c
+++ b/src/textprop.c
@@ -1075,7 +1075,9 @@
 	    ++prevprop.ga_len;
 	}
 
-	if (prop.tp_col + prop.tp_len >= skipped && ga_grow(&nextprop, 1) == OK)
+	// Only add the property to the next line if the length is bigger than
+	// zero.
+	if (prop.tp_col + prop.tp_len > skipped && ga_grow(&nextprop, 1) == OK)
 	{
 	    p = ((textprop_T *)nextprop.ga_data) + nextprop.ga_len;
 	    *p = prop;