Fix protoc-gen-nanopb when the path contains spaces

diff --git a/generator/protoc-gen-nanopb b/generator/protoc-gen-nanopb
index 90be6a5..2de5621 100755 (executable)
--- a/generator/protoc-gen-nanopb
+++ b/generator/protoc-gen-nanopb
@@ -9,4 +9,5 @@
 # path is already set up properly and there is no need to give
 # --plugin= on the command line.
 
-exec python $(dirname $0)/nanopb_generator.py --protoc-plugin
+MYPATH=$(dirname "$0")
+exec python "$MYPATH/nanopb_generator.py" --protoc-plugin