Check access level for static methods call.

engine/vm.c

@@ -4336,6 +4336,9 @@ static sxi32 VmByteCodeExec(
 									} else if((pMeth->iFlags & PH7_CLASS_ATTR_STATIC) == 0) {
 										PH7_VmThrowError(&(*pVm), PH7_CTX_ERR, "Attempt to call statically a non-static method '%z::%z()'",
 														&pClass->sName, &sName);
+									} else if(!VmClassMemberAccess(&(*pVm), pClass, pMeth->iProtection)) {
+										PH7_VmThrowError(&(*pVm), PH7_CTX_ERR, "Method '%z::%z()' is inaccessible due to its protection level",
+														&pClass->sName, &sName);
 									} else {
 										/* Push method name on the stack */
 										PH7_MemObjRelease(pTos);