Fix the ambiguous integer literal error

This commit fixes this:

> src/crypto/symm.rs:95:25: 95:52 error: cannot determine a type for
> this expression: cannot determine the type of this integer; add a
> suffix to specify the type explicitly [E0101]
> src/crypto/symm.rs:95                 let v = if padding { 1 } else { 0 } as c_int;

1 files changed, 1 insertions, 1 deletions

diff --git a/src/crypto/symm.rs b/src/crypto/symm.rs
index 8d8f651c..93286498 100644
--- a/src/crypto/symm.rs
+++ b/src/crypto/symm.rs
@@ -92,7 +92,7 @@ impl Crypter {
     pub fn pad(&self, padding: bool) {
         if self.blocksize > 0 {
             unsafe {
-                let v = if padding { 1 } else { 0 } as c_int;
+                let v = if padding { 1 as c_int } else { 0 };
                 EVP_CIPHER_CTX_set_padding(self.ctx, v);
             }
         }