Fix supernumerary 's' in sys._debugmallocstats() output.
diff --git a/Objects/methodobject.c b/Objects/methodobject.c
index 60df302..f0685dd 100644
--- a/Objects/methodobject.c
+++ b/Objects/methodobject.c
@@ -343,7 +343,7 @@
 _PyCFunction_DebugMallocStats(FILE *out)
 {
     _PyDebugAllocatorStats(out,
-                           "free PyCFunctionObjects",
+                           "free PyCFunctionObject",
                            numfree, sizeof(PyCFunctionObject));
 }