Auto merge of #1126 - emilio:b, r=pepyakin

Minor version bump.

Again, just fixes, and I got FF to build with #1124.
diff --git a/Cargo.lock b/Cargo.lock
index 649daed..e2e2284 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -23,7 +23,7 @@
 
 [[package]]
 name = "bindgen"
-version = "0.31.1"
+version = "0.31.2"
 dependencies = [
  "cexpr 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
diff --git a/Cargo.toml b/Cargo.toml
index d6505f8..b6ed1b8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -13,7 +13,7 @@
 readme = "README.md"
 repository = "https://github.com/rust-lang-nursery/rust-bindgen"
 documentation = "https://docs.rs/bindgen"
-version = "0.31.1"
+version = "0.31.2"
 build = "build.rs"
 
 include = [