patch 9.0.0904: various comment and indent flaws

Problem:    Various comment and indent flaws.
Solution:   Improve comments and indenting.
diff --git a/Filelist b/Filelist
index 9825e45..30d5d58 100644
--- a/Filelist
+++ b/Filelist
@@ -12,6 +12,7 @@
 		.github/workflows/ci.yml \
 		.github/workflows/codeql-analysis.yml \
 		.github/workflows/coverity.yml \
+		.github/dependabot.yml \
 		.gitignore \
 		.hgignore \
 		.lgtm.yml \
@@ -396,6 +397,7 @@
 		src/libvterm/t/66screen_extent.test \
 		src/libvterm/t/67screen_dbl_wh.test \
 		src/libvterm/t/68screen_termprops.test \
+		src/libvterm/t/69screen_reflow.test \
 		src/libvterm/t/90vttest_01-movement-1.test \
 		src/libvterm/t/90vttest_01-movement-2.test \
 		src/libvterm/t/90vttest_01-movement-3.test \
@@ -643,6 +645,7 @@
 		src/os_mac_conv.c \
 		src/os_macosx.m \
 		src/proto/os_mac_conv.pro \
+		src/proto/os_macosx.pro \
 
 # source files for VMS (in the extra archive)
 SRC_VMS =	\