Bug 1245414, part 4 - Update mfbt/decimal/zero-serialization.patch. r=Waldo

--HG--
extra : rebase_source : 96cf5b120ac836157ec560da278e286b4ff70049

mfbt/decimal/zero-serialization.patch

@@ -1,7 +1,7 @@
 diff --git a/mfbt/decimal/Decimal.cpp b/mfbt/decimal/Decimal.cpp
 --- a/mfbt/decimal/Decimal.cpp
 +++ b/mfbt/decimal/Decimal.cpp
-@@ -278,17 +278,17 @@ bool Decimal::EncodedData::operator==(co
+@@ -277,17 +277,17 @@ bool Decimal::EncodedData::operator==(co
  }
  
  Decimal::Decimal(int32_t i32)