Fix compilation warnings in MinGW64 build using GCC 7

Reported by Richard Copley <rcopley@gmail.com>.
* src/w32heap.c (init_heap): Declare enable_lfh only for
mingw.org's MinGW build.

* src/w32console.c (w32con_write_glyphs):
* src/unexw32.c (get_section_info, COPY_CHUNK, unexec): Fix some
mismatches of data type vs format spec.

* src/w32fns.c (compute_tip_xy):
* src/w32proc.c (stop_timer_thread):
* src/w32notify.c (remove_watch):
* src/eval.c (internal_lisp_condition_case):
* src/editfns.c (Ftranslate_region_internal):
* src/data.c (Fmake_variable_buffer_local, cons_to_unsigned)
(cons_to_signed):
* src/buffer.c (fix_overlays_before): Initialize variables to
avoid compiler warnings.

* lib-src/etags.c (TeX_commands, process_file_name): Initialize
variables to avoid compilation warnings.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/editfns.c b/src/editfns.c
index d599fcfec80..95f35549e4e 100644
--- a/src/editfns.c
+++ b/src/editfns.c
@@ -3613,7 +3613,7 @@ It returns the number of characters changed.  */)
   for (; pos < end_pos; )
     {
       register unsigned char *p = BYTE_POS_ADDR (pos_byte);
-      unsigned char *str, buf[MAX_MULTIBYTE_LENGTH];
+      unsigned char *str = tt, buf[MAX_MULTIBYTE_LENGTH];
       int len, str_len;
       int oc;
       Lisp_Object val;