Handle also longs in EncodedSize

diff --git a/generator/nanopb_generator.py b/generator/nanopb_generator.py
index 0f14a04..aa2c1b3 100755 (executable)
--- a/generator/nanopb_generator.py
+++ b/generator/nanopb_generator.py
@@ -105,7 +105,7 @@ class EncodedSize:
         self.symbols = symbols
     
     def __add__(self, other):
-        if isinstance(other, int):
+        if isinstance(other, (int, long)):
             return EncodedSize(self.value + other, self.symbols)
         elif isinstance(other, (str, Names)):
             return EncodedSize(self.value, self.symbols + [str(other)])