Fix compilation with -Wextra (#164)

* add -Wextra -Werror

* remove void arg in GfxdCallback_FormatSingleEntry

* mark CRC32 functions as maybe_unused

* remove useless comment

* fix clang warnings

* replace (void) with [[maybe_unused]]

* run make format

1 files changed, 4 insertions, 4 deletions

diff --git a/ZAPD/ZResource.cpp b/ZAPD/ZResource.cpp
index 15b67a1..bec6cfe 100644
--- a/ZAPD/ZResource.cpp
+++ b/ZAPD/ZResource.cpp
@@ -114,7 +114,7 @@ void ZResource::ParseXML(tinyxml2::XMLElement* reader)
 	}
 }
 
-void ZResource::Save(const fs::path& outFolder)
+void ZResource::Save([[maybe_unused]] const fs::path& outFolder)
 {
 }
 
@@ -177,12 +177,12 @@ std::string ZResource::GetBodySourceCode() const
 	return "ERROR";
 }
 
-std::string ZResource::GetSourceOutputCode(const std::string& prefix)
+std::string ZResource::GetSourceOutputCode([[maybe_unused]] const std::string& prefix)
 {
 	return "";
 }
 
-std::string ZResource::GetSourceOutputHeader(const std::string& prefix)
+std::string ZResource::GetSourceOutputHeader([[maybe_unused]] const std::string& prefix)
 {
 	return "";
 }
@@ -191,7 +191,7 @@ void ZResource::ParseRawData()
 {
 }
 
-void ZResource::DeclareReferences(const std::string& prefix)
+void ZResource::DeclareReferences([[maybe_unused]] const std::string& prefix)
 {
 }