Add BOTAN_UNUSED in creator functions

If all (say) stream ciphers are disabled, avoid unused arg warning.

[ci skip]

5 files changed, 15 insertions, 0 deletions

diff --git a/src/lib/block/block_cipher.cpp b/src/lib/block/block_cipher.cpp
index 750d01821..fa0ecad52 100644
--- a/src/lib/block/block_cipher.cpp
+++ b/src/lib/block/block_cipher.cpp
@@ -274,6 +274,9 @@ BlockCipher::create(const std::string& algo,
       }
 #endif
 
+   BOTAN_UNUSED(req);
+   BOTAN_UNUSED(provider);
+
    return nullptr;
    }
 
diff --git a/src/lib/kdf/kdf.cpp b/src/lib/kdf/kdf.cpp
index 2fba1868e..0e9d840c1 100644
--- a/src/lib/kdf/kdf.cpp
+++ b/src/lib/kdf/kdf.cpp
@@ -200,6 +200,9 @@ std::unique_ptr<KDF> KDF::create(const std::string& algo_spec,
       }
 #endif
 
+   BOTAN_UNUSED(req);
+   BOTAN_UNUSED(provider);
+
    return nullptr;
    }
 
diff --git a/src/lib/mac/mac.cpp b/src/lib/mac/mac.cpp
index 3dfe753b7..c48deb24b 100644
--- a/src/lib/mac/mac.cpp
+++ b/src/lib/mac/mac.cpp
@@ -121,6 +121,9 @@ MessageAuthenticationCode::create(const std::string& algo_spec,
       }
 #endif
 
+   BOTAN_UNUSED(req);
+   BOTAN_UNUSED(provider);
+
    return nullptr;
    }
 
diff --git a/src/lib/pbkdf/pbkdf.cpp b/src/lib/pbkdf/pbkdf.cpp
index d9479bd8d..8f72a9180 100644
--- a/src/lib/pbkdf/pbkdf.cpp
+++ b/src/lib/pbkdf/pbkdf.cpp
@@ -52,6 +52,9 @@ std::unique_ptr<PBKDF> PBKDF::create(const std::string& algo_spec,
       }
 #endif
 
+   BOTAN_UNUSED(req);
+   BOTAN_UNUSED(provider);
+
    return nullptr;
    }
 
diff --git a/src/lib/stream/stream_cipher.cpp b/src/lib/stream/stream_cipher.cpp
index dfe1fa69b..f33d68296 100644
--- a/src/lib/stream/stream_cipher.cpp
+++ b/src/lib/stream/stream_cipher.cpp
@@ -112,6 +112,9 @@ std::unique_ptr<StreamCipher> StreamCipher::create(const std::string& algo_spec,
 
 #endif
 
+   BOTAN_UNUSED(req);
+   BOTAN_UNUSED(provider);
+
    return nullptr;
    }