fix guards of PyCFuncPtr.__new__

Author: timfel

graalpython/com.oracle.graal.python/src/com/oracle/graal/python/builtins/modules/ctypes/PyCFuncPtrBuiltins.java

@@ -184,7 +184,7 @@ static Object simple(Object type, @SuppressWarnings("unused") Object[] args, @Su
             return pyCDataNewNode.execute(inliningTarget, type, dict);
         }
 
-        @Specialization(guards = {"args.length <= 1", "isTuple(args)"})
+        @Specialization(guards = {"args.length == 1", "isTuple(args)"})
         static Object fromNativeLibrary(VirtualFrame frame, Object type, Object[] args, @SuppressWarnings("unused") PKeyword[] kwds,
                         @Cached PyCFuncPtrFromDllNode pyCFuncPtrFromDllNode) {
             return pyCFuncPtrFromDllNode.execute(frame, type, args);
@@ -234,7 +234,7 @@ static Object callback(VirtualFrame frame, Object type, Object[] args, @Suppress
             return self;
         }
 
-        @Specialization(guards = {"args.length != 1", "!isPTuple(args)", "isLong(this, args, longCheckNode)"}, limit = "1")
+        @Specialization(guards = {"args.length > 1", "!isPTuple(args)", "isLong(this, args, longCheckNode)"}, limit = "1")
         static Object error(@SuppressWarnings("unused") Object type, @SuppressWarnings("unused") Object[] args, @SuppressWarnings("unused") PKeyword[] kwds,
                         @SuppressWarnings("unused") @Bind("this") Node inliningTarget,
                         @SuppressWarnings("unused") @Exclusive @Cached PyLongCheckNode longCheckNode,