cert.py: Fix EXP05C crash (#2392)

* cert.py: Fix EXP05 crash

* Fix arguments check

addons/cert.py

@@ -119,6 +119,8 @@ def exp05(data):
         elif token.str == '(' and token.astOperand1 and token.astOperand2 and token.astOperand1.function:
             function = token.astOperand1.function
             arguments = cppcheckdata.getArguments(token.previous)
+            if not arguments:
+                continue
             for argnr, argvar in function.argument.items():
                 if argnr < 1 or argnr > len(arguments):
                     continue

addons/test/cert-test.cpp

@@ -8,6 +8,11 @@ public:
     static int rand();
 };
 
+namespace exp05c {
+    using uint32 = std::uint32_t;
+    static const uint32 a = static_cast<uint32>(0xFFFFFFFF);
+}
+
 void msc30(msc30TestClass & testClass)
 {
     unsigned int num = rand(); // cert-MSC30-c