This fixes some conversion errors one gets when compiling with LLVM/clang. Most of them are caused when a bit-specific type (i.e. `uint16_t`) is implicitly cast to an `enum` of smaller value range. The fix is just an explicit casting of those types to the desired target type. JerryScript-DCO-1.0-Signed-off-by: Martine Lenders [email protected]