meson: Remove -Wno-unused-parameter

We build libcamera with -Wno-unused-parameter and this doesn't cause
much issue internally. However, it prevents catching unused parameters
in inline functions defined in public headers. This can lead to
compilation warnings for applications compiled without
-Wno-unused-parameter.

To catch those issues, remove -Wno-unused-parameter and fix all the
related warnings with [[maybe_unused]].

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Kieran Bingham <kieran.bingham@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

1 files changed, 2 insertions, 1 deletions

diff --git a/test/process/process_test.cpp b/test/process/process_test.cpp
index 721a7c9d..42a26749 100644
--- a/test/process/process_test.cpp
+++ b/test/process/process_test.cpp
@@ -80,7 +80,8 @@ protected:
 	}
 
 private:
-	void procFinished(Process *proc, enum Process::ExitStatus exitStatus, int exitCode)
+	void procFinished([[maybe_unused]] Process *proc,
+			  enum Process::ExitStatus exitStatus, int exitCode)
 	{
 		exitStatus_ = exitStatus;
 		exitCode_ = exitCode;