1 files changed, 6 insertions, 4 deletions

diff --git a/contrib/cvs/diff/diff3.c b/contrib/cvs/diff/diff3.c
index c2997e92cb5f..ab68eaf25ee9 100644
--- a/contrib/cvs/diff/diff3.c
+++ b/contrib/cvs/diff/diff3.c
@@ -44,6 +44,8 @@ void printf_output PARAMS((char const *, ...))
      ;
 void flush_output PARAMS((void));
 
+char * cvs_temp_name PARAMS((void));
+
 /*
  * Internal data structures and macros for the diff3 program; includes
  * data structures for both diff3 diffs and normal diffs.
@@ -478,8 +480,6 @@ diff3_run (argc, argv, out, callbacks_arg)
 
   free(content0);
   free(content1);
-  free_diff_blocks(thread0);
-  free_diff_blocks(thread1);
   free_diff3_blocks(diff3);
 
   if (! callbacks || ! callbacks->write_output)
@@ -679,7 +679,7 @@ make_3way_diff (thread0, thread1)
 
   struct diff3_block const *last_diff3;
 
-  static struct diff3_block const zero_diff3;
+  static struct diff3_block const zero_diff3 = { 0 };
 
   /* Initialization */
   result = 0;
@@ -768,6 +768,8 @@ make_3way_diff (thread0, thread1)
       tmpblock = using_to_diff3_block (using, last_using,
 				       base_water_thread, high_water_thread,
 				       last_diff3);
+      free_diff_blocks(using[0]);
+      free_diff_blocks(using[1]);
 
       if (!tmpblock)
 	diff3_fatal ("internal error: screwup in format of diff blocks");
@@ -1277,7 +1279,7 @@ read_diff (filea, fileb, output_placement)
   *ap++ = fileb;
   *ap = 0;
 
-  diffout = (char *)cvs_temp_name();
+  diffout = cvs_temp_name ();
 
   outfile_hold = outfile;
   callbacks_hold = callbacks;