Merge pull request #190 from fperrad/20170407_lint

chacha: more linting

src/stream/chacha/chacha_crypt.c

@@ -84,7 +84,6 @@ int chacha_crypt(chacha_state *st, const unsigned char *in, unsigned long inlen,
      out += 64;
      in  += 64;
    }
-   return CRYPT_OK;
 }
 
 #endif

src/stream/chacha/chacha_setup.c

@@ -16,8 +16,8 @@
 
 #ifdef LTC_CHACHA
 
-static const char sigma[16] = "expand 32-byte k";
-static const char tau[16]   = "expand 16-byte k";
+static const char * const sigma = "expand 32-byte k";
+static const char * const tau   = "expand 16-byte k";
 
 /**
    Initialize an ChaCha context (only the key)