android/LogListener: pass formatted message to OnLog()

src/LogBackend.cxx

@@ -183,9 +183,14 @@ Log(LogLevel level, const Domain &domain, const char *msg) noexcept
 #ifdef ANDROID
 	__android_log_print(ToAndroidLogLevel(level), "MPD",
 			    "%s: %s", domain.GetName(), msg);
-	if (logListener != nullptr)
+	if (logListener != nullptr) {
+		char buffer[1024];
+		snprintf(buffer, sizeof(buffer), "%s: %s",
+			 domain.GetName(), msg);
+
 		logListener->OnLog(Java::GetEnv(), ToAndroidLogLevel(level),
-				   "%s: %s", domain.GetName(), msg);
+				   buffer);
+	}
 #else
 
 	if (level < log_threshold)

src/android/LogListener.cxx

@@ -20,8 +20,6 @@
 #include "LogListener.hxx"
 #include "java/Class.hxx"
 #include "java/String.hxx"
-#include "util/AllocatedString.hxx"
-#include "util/FormatString.hxx"
 
 LogListener::LogListener(JNIEnv *env, jobject obj) noexcept
 	:Java::GlobalObject(env, obj)
@@ -33,16 +31,10 @@ LogListener::LogListener(JNIEnv *env, jobject obj) noexcept
 }
 
 void
-LogListener::OnLog(JNIEnv *env, int priority,
-		   const char *fmt, ...) const noexcept
+LogListener::OnLog(JNIEnv *env, int priority, const char *msg) const noexcept
 {
 	assert(env != nullptr);
 
-	std::va_list args;
-	va_start(args, fmt);
-	const auto log = FormatStringV(fmt, args);
-	va_end(args);
-
 	env->CallVoidMethod(Get(), onLogMethod, priority,
-			    Java::String(env, log.c_str()).Get());
+			    Java::String(env, msg).Get());
 }

src/android/LogListener.hxx

@@ -28,8 +28,7 @@ class LogListener : public Java::GlobalObject {
 public:
 	LogListener(JNIEnv *env, jobject obj) noexcept;
 
-	void OnLog(JNIEnv *env, int priority,
-		   const char *fmt, ...) const noexcept;
+	void OnLog(JNIEnv *env, int priority, const char *msg) const noexcept;
 };
 
 #endif