bpo-38823: Fix refleak in _tracemalloc init error handling (GH-17235)

diff --git a/Modules/_tracemalloc.c b/Modules/_tracemalloc.c
index 211c6fbb8bcef8bef928f9b5c5f24eddf7c7eabc..70219721b51cd01b00acc43691e730ad044c0b21 100644 (file)
--- a/Modules/_tracemalloc.c
+++ b/Modules/_tracemalloc.c
@@ -1656,8 +1656,10 @@ PyInit__tracemalloc(void)
     if (m == NULL)
         return NULL;
 
-    if (tracemalloc_init() < 0)
+    if (tracemalloc_init() < 0) {
+        Py_DECREF(m);
         return NULL;
+    }
 
     return m;
 }