Added an explicit cast to silence a compiler warning casting a  parameter to an enum type (). (#1052)

diff --git a/arch/Mips/MipsModule.c b/arch/Mips/MipsModule.c
index 67f2dbb..00bb360 100644
--- a/arch/Mips/MipsModule.c
+++ b/arch/Mips/MipsModule.c
@@ -45,7 +45,7 @@
 static cs_err option(cs_struct *handle, cs_opt_type type, size_t value)
 {
 	if (type == CS_OPT_MODE) {
-		value = updated_mode(value);
+		value = updated_mode((cs_mode)value);
 		if (value & CS_MODE_32)
 			handle->disasm = Mips_getInstruction;
 		else