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1e2842f3e5
Unlikely to practically happen, but still safer to just check for sure.
A simple zero-value test doesn't cost us much (on modern CPUs perhaps
not even a full clock cycle).
| ../composite/compalloc.c: In function ‘compRedirectWindow’:
| ../composite/compalloc.c:167:35: warning: dereference of NULL ‘pClient’ [CWE-476] [-Wanalyzer-null-dereference]
| 167 | ccw->id = FakeClientID(pClient->index);
| | ~~~~~~~^~~~~~~
| ../composite/compalloc.c: In function ‘compUnredirectWindow’:
| ../composite/compalloc.c:331:75: warning: dereference of NULL ‘pClient’ [CWE-476] [-Wanalyzer-null-dereference]
| 331 | if (ccw->update == update && dixClientIdForXID(ccw->id) == pClient->index) {
| | ~~~~~~~^~~~~~~
Signed-off-by: Enrico Weigelt, metux IT consult <info@metux.net>