embunit: fix macros

```diff
@@ -56,10 +56,10 @@ void assertImplementationCStr(const char *expected,const char *actual, long line
 
 #define TEST_ASSERT_EQUAL_INT(expected_, actual_) \
     do { \
-        (long long) ____expected__ = (long long) (expected_); \
-        (long long) ____actual__ = (long long) (actual_); \
+        long long ____expected__ = (long long) (expected_); \
+        long long ____actual__ = (long long) (actual_); \
         if (____expected__ != ____actual__) { \
-            assertImplementationInt((int) ____expected__, (int) ____actual__, __LINE__, __FILE__); \
+            assertImplementationInt(expected_, actual_, __LINE__, __FILE__); \
             return; \
         } \
     } while (0)
```