src: Correcting coding style of security related code.

Change-Id: Iff09b16d8a86462aff0abbd202b82cebb74bc365
diff --git a/src/security/certificate-subject-description.cpp b/src/security/certificate-subject-description.cpp
index 44cd8c5..5c257d4 100644
--- a/src/security/certificate-subject-description.cpp
+++ b/src/security/certificate-subject-description.cpp
@@ -32,8 +32,8 @@
   // AttributeValue ::= ANY DEFINED BY AttributeType
   DERSequenceEncoder attributeTypeAndValue(out);
   {
-    oid_.encode(attributeTypeAndValue);
-    DEREncodeTextString(attributeTypeAndValue, value_, PRINTABLE_STRING);
+    m_oid.encode(attributeTypeAndValue);
+    DEREncodeTextString(attributeTypeAndValue, m_value, PRINTABLE_STRING);
   }
   attributeTypeAndValue.MessageEnd();
 }
@@ -54,11 +54,11 @@
 
   BERSequenceDecoder attributeTypeAndValue(in);
   {
-    oid_.decode(attributeTypeAndValue);
+    m_oid.decode(attributeTypeAndValue);
 
     /// @todo May be add more intelligent processing, since the following
     ///       may fail if somebody encoded attribute that uses non PRINTABLE_STRING as value
-    BERDecodeTextString(attributeTypeAndValue, value_, PRINTABLE_STRING);
+    BERDecodeTextString(attributeTypeAndValue, m_value, PRINTABLE_STRING);
   }
   attributeTypeAndValue.MessageEnd();
 }