SSLContext.load_dh_params() now properly closes the input file.

Misc/NEWS

@@ -217,6 +217,8 @@ Core and Builtins
 Library
 -------
 
+- SSLContext.load_dh_params() now properly closes the input file.
+
 - Issue #16829: IDLE printing no longer fails if there are spaces or other
   special characters in the file path.
 

Modules/_ssl.c

@@ -2248,6 +2248,7 @@ load_dh_params(PySSLContext *self, PyObject *filepath)
     errno = 0;
     PySSL_BEGIN_ALLOW_THREADS
     dh = PEM_read_DHparams(f, NULL, NULL, NULL);
+    fclose(f);
     PySSL_END_ALLOW_THREADS
     if (dh == NULL) {
         if (errno != 0) {