Revert 239921 "Revert 239759 "The comment in base64.h implies th..."

trunk/src/google_apis/gaia/oauth_request_signer.cc

Index: trunk/src/google_apis/gaia/oauth_request_signer.cc
===================================================================
--- trunk/src/google_apis/gaia/oauth_request_signer.cc	(revision 239942)
+++ trunk/src/google_apis/gaia/oauth_request_signer.cc	(working copy)
@@ -204,10 +204,12 @@
   DCHECK(hmac.DigestLength() == kHmacDigestLength);
   unsigned char digest[kHmacDigestLength];
   bool result = hmac.Init(key) &&
-      hmac.Sign(text, digest, kHmacDigestLength) &&
-      base::Base64Encode(std::string(reinterpret_cast<const char*>(digest),
-                                     kHmacDigestLength),
-                         signature_return);
+      hmac.Sign(text, digest, kHmacDigestLength);
+  if (result) {
+    base::Base64Encode(
+        std::string(reinterpret_cast<const char*>(digest), kHmacDigestLength),
+        signature_return);
+  }
   return result;
 }