Fix compiler warnings.

* src/preproc/eqn/main.cpp (do_file), src/roff/troff/env.cpp
(environment::print_env), src/roff/troff/mtsm.cpp
(statem::display_state): Add syntactical sugar.

* src/utils/tfmtodit/tfmtodit.cpp (char_info_word): Use `unsigned
char' for all members.

* src/devices/grohtml/html-text.cpp (html_text::remove_def): Remove
unused variable `q'.
* src/devices/grohtml/post-html.cpp
(html_printer::lookahead_for_tables): Remove unused variable `left'
and `seen_text'.

1 files changed, 5 insertions, 5 deletions

diff --git a/src/utils/tfmtodit/tfmtodit.cpp b/src/utils/tfmtodit/tfmtodit.cpp
index 73e5c750..5f5c1d96 100644
--- a/src/utils/tfmtodit/tfmtodit.cpp
+++ b/src/utils/tfmtodit/tfmtodit.cpp
@@ -1,5 +1,5 @@
 // -*- C++ -*-
-/* Copyright (C) 1989-1992, 2000, 2001, 2004, 2009
+/* Copyright (C) 1989-1992, 2000, 2001, 2004, 2009, 2011
      Free Software Foundation, Inc.
      Written by James Clark (jjc@jclark.com)
 
@@ -66,10 +66,10 @@ extern "C" const char *Version_string;
 
 struct char_info_word {
   unsigned char width_index;
-  char height_index;
-  char depth_index;
-  char italic_index;
-  char tag;
+  unsigned char height_index;
+  unsigned char depth_index;
+  unsigned char italic_index;
+  unsigned char tag;
   unsigned char remainder;
 };