renamed blob to blob_type_t

source/core/utils/value.cpp

@@ -12,7 +12,7 @@ size_t determine_size(const char *val) {
   return strlen(val);
 }
 
-size_t determine_size(const blob &val) {
+size_t determine_size(const blob_type_t &val) {
   return val.size();
 }
 }