Fixed problem with null usernames coming from prepackaged mime messages in 'From' for MIME_encrypt_message

src/keymanagement.c

@@ -525,6 +525,9 @@ DYNAMIC_API PEP_STATUS myself(PEP_SESSION session, pEp_identity * identity)
         }
     }
 
+    if (!identity->username)
+        identity->username = strdup("");
+    
     status = set_identity(session, identity);
     assert(status == PEP_STATUS_OK);
     if (status != PEP_STATUS_OK) {

test/message_api_test.cc

@@ -145,11 +145,14 @@ int main() {
     }
     inFile4.close();
     
-    const char* out_msg_plain = text4.c_str();
+//    const char* out_msg_plain = text4.c_str();
+    
+    const char* out_msg_plain = "From: krista@kgrothoff.org\nTo: Volker <vb@pep-project.org>\nSubject: Test\nContent-Type: text/plain; charset=utf-8\nContent-Language: en-US\nContent-Transfer-Encoding:quoted-printable\n\ngaga\n\n";
     char* enc_msg = NULL;
     char* dec_msg = NULL;
 
-    PEP_STATUS status7 = MIME_encrypt_message(session, text4.c_str(), text4.length(), NULL, &enc_msg, PEP_enc_PGP_MIME, 0);
+//    PEP_STATUS status7 = MIME_encrypt_message(session, text4.c_str(), text4.length(), NULL, &enc_msg, PEP_enc_PGP_MIME, 0);
+    PEP_STATUS status7 = MIME_encrypt_message(session, out_msg_plain, strlen(out_msg_plain), NULL, &enc_msg, PEP_enc_PGP_MIME, 0);
     assert(status7 == PEP_STATUS_OK);
     
     cout << enc_msg << endl;