Fix pedantic compiler error.

bc470e85 · Robert Bradshaw · 1b3c3171 · bc470e85
Commit bc470e85 authored Jun 29, 2017 by Robert Bradshaw
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Cython/Utility/ModuleSetupCode.c Cython/Utility/ModuleSetupCode.c +2 -1

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--- a/Cython/Utility/ModuleSetupCode.c
+++ b/Cython/Utility/ModuleSetupCode.c
@@ -956,8 +956,9 @@ void __Pyx_FastGil_PyGILState_Release(PyGILState_STATE oldstate) {
 static void __Pyx_FastGilFuncInit0(void) {
  /* Try to detect autoTLSkey. */
+  int key;
  void* this_thread_state = (void*) PyGILState_GetThisThreadState();
-  for (int key = 0; key < 100; key++) {
+  for (key = 0; key < 100; key++) {
    if (PyThread_get_key_value(key) == this_thread_state) {
      __Pyx_FastGil_autoTLSkey = key;
      break;