In pg_upgrade, fix a few place that used maloc/free rather than

pg_malloc/pg_free.

contrib/pg_upgrade/check.c

@@ -987,7 +987,7 @@ get_canonical_locale_name(int category, const char *locale)
 	if (!setlocale(category, save))
         pg_log(PG_FATAL, "failed to restore old locale \"%s\"\n", save);
 
-	free(save);
+	pg_free(save);
 
 	return res;
 }

contrib/pg_upgrade/file.c

@@ -148,7 +148,7 @@ copy_file(const char *srcfile, const char *dstfile, bool force)
 		return -1;
 	}
 
-	buffer = (char *) malloc(COPY_BUF_SIZE);
+	buffer = (char *) pg_malloc(COPY_BUF_SIZE);
 
 	if (buffer == NULL)
 	{
@@ -171,7 +171,7 @@ copy_file(const char *srcfile, const char *dstfile, bool force)
 			int			save_errno = errno;
 
 			if (buffer != NULL)
-				free(buffer);
+				pg_free(buffer);
 
 			if (src_fd != 0)
 				close(src_fd);
@@ -194,7 +194,7 @@ copy_file(const char *srcfile, const char *dstfile, bool force)
 			int			save_errno = errno ? errno : ENOSPC;
 
 			if (buffer != NULL)
-				free(buffer);
+				pg_free(buffer);
 
 			if (src_fd != 0)
 				close(src_fd);
@@ -208,7 +208,7 @@ copy_file(const char *srcfile, const char *dstfile, bool force)
 	}
 
 	if (buffer != NULL)
-		free(buffer);
+		pg_free(buffer);
 
 	if (src_fd != 0)
 		close(src_fd);