patch 8.1.1748: :args output is not aligned

Problem:    :args output is not aligned.
Solution:   Output a line break after the last item in a row.
diff --git a/src/version.c b/src/version.c
index 9554f9b..d1dde86 100644
--- a/src/version.c
+++ b/src/version.c
@@ -778,6 +778,8 @@
 static int included_patches[] =
 {   /* Add new patch number below this line */
 /**/
+    1748,
+/**/
     1747,
 /**/
     1746,
@@ -4440,6 +4442,13 @@
 		    msg_putchar(' ');
 	    }
 	}
+	else
+	{
+	    // this row is out of items, thus at the end of the row
+	    if (msg_col > 0 && cur_row < nrow)
+		msg_putchar('\n');
+	    ++cur_row;
+	}
     }
 }