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-rw-r--r--src/PJ_wink1.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/PJ_wink1.cpp b/src/PJ_wink1.cpp
index e466988f..de2f55ee 100644
--- a/src/PJ_wink1.cpp
+++ b/src/PJ_wink1.cpp
@@ -33,7 +33,7 @@ static LP s_inverse (XY xy, PJ *P) { /* Spheroidal, inverse */
PJ *PROJECTION(wink1) {
struct pj_opaque *Q = static_cast<struct pj_opaque*>(pj_calloc (1, sizeof (struct pj_opaque)));
- if (0==Q)
+ if (nullptr==Q)
return pj_default_destructor(P, ENOMEM);
P->opaque = Q;