[PATCH 1/1] inetmib1: Get rid of GCC12 warning.

[Eric Pouech]

From: Eric Pouech

Code assumes that tableIndex is never 0, while GCC cannot
infer it. So include tableIndex=0 case into already handled
error cases.

GCC/Mingw complains with:
/home/eric/work/wine/dlls/inetmib1/main.c: In function 'mib2IfEntryQuery':
/home/eric/work/wine/dlls/inetmib1/main.c:646:25: warning: array subscript 4294967295 is above array bounds of 'MIB_IFROW[1]' {aka 'struct _MIB_IFROW[1]'} [-Warray-bounds]
  646 |                         &ifTable->table[tableIndex - 1], item,
      |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /home/eric/work/wine/include/ipmib.h:21,
                 from /home/eric/work/wine/include/iprtrmib.h:24,
                 from /home/eric/work/wine/include/iphlpapi.h:25,
                 from /home/eric/work/wine/dlls/inetmib1/main.c:30:
/home/eric/work/wine/include/ifmib.h:66:15: note: while referencing 'table'
   66 |     MIB_IFROW table[1];

Signed-off-by: Eric Pouech 
---
 dlls/inetmib1/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dlls/inetmib1/main.c b/dlls/inetmib1/main.c
index 5d925183505..3255952850f 100644
--- a/dlls/inetmib1/main.c
+++ b/dlls/inetmib1/main.c
@@ -637,7 +637,7 @@ static BOOL mib2IfEntryQuery(BYTE bPduType, SnmpVarBind *pVarBind,
             {
                 assert(tableIndex);
                 assert(item);
-                if (tableIndex > ifTable->dwNumEntries)
+                if (!tableIndex || tableIndex > ifTable->dwNumEntries)
                     *pErrorStatus = SNMP_ERRORSTATUS_NOSUCHNAME;
                 else
                 {