initialise dc variable to satisfy old compilers.

When compiling with -Wall on a machine with an old compiler it gives a false
positive that the dc variable which is a structure of type DISPLAY_COLUMNS
could be used uninitialised. In fact the dc variable's members will always get
set in the case it is used, otherwise it is left uninitialised.
This fix just causes the dc variable's members to always get initialised to 0
at declaration, so the false positive will not get flagged.

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Rich Salz <rsalz@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/5337)

diff --git a/apps/openssl.c b/apps/openssl.c
index fffa05e1c7a1af719461221afed020b307bd8543..39b4f2ce5434bd7ceb09ab64b0d5ec5bf9a60460 100644 (file)
--- a/apps/openssl.c
+++ b/apps/openssl.c
@@ -520,7 +520,7 @@ static void list_type(FUNC_TYPE ft, int one)
 {
     FUNCTION *fp;
     int i = 0;
-    DISPLAY_COLUMNS dc;
+    DISPLAY_COLUMNS dc = {0};
 
     if (!one)
         calculate_columns(&dc);