Added Check to VerifyAlignment (#5675)

* Added missing EndTable() call to VerifyObject()

VerifyObject called VerifyTableStart() but not EndTable(). This made Verifier::VerifyComplexity() increase depth_ with each table, not with the depth of tables.

https://groups.google.com/forum/#!topic/flatbuffers/OpxtW5UFAdg

* Added Check to VerifyAlignment

https://stackoverflow.com/questions/59376308/flatbuffers-verifier-returns-false-without-any-assertion-flatbuffers-debug-veri

include/flatbuffers/flatbuffers.h

@@ -2143,7 +2143,7 @@ class Verifier FLATBUFFERS_FINAL_CLASS {
   }
 
   template<typename T> bool VerifyAlignment(size_t elem) const {
-    return (elem & (sizeof(T) - 1)) == 0 || !check_alignment_;
+    return Check((elem & (sizeof(T) - 1)) == 0 || !check_alignment_);
   }
 
   // Verify a range indicated by sizeof(T).