Fix bug which logs errors twice if stack traces are disabled.

Disabling stack trackes currently logs messages twice, once with and once
without stack trace.

PiperOrigin-RevId: 244853127

library/core/src/main/java/com/google/android/exoplayer2/util/Log.java

@@ -88,8 +88,7 @@ public final class Log {
   public static void d(String tag, String message, @Nullable Throwable throwable) {
     if (!logStackTraces) {
       d(tag, appendThrowableMessage(message, throwable));
-    }
-    if (logLevel == LOG_LEVEL_ALL) {
+    } else if (logLevel == LOG_LEVEL_ALL) {
       android.util.Log.d(tag, message, throwable);
     }
   }
@@ -105,8 +104,7 @@ public final class Log {
   public static void i(String tag, String message, @Nullable Throwable throwable) {
     if (!logStackTraces) {
       i(tag, appendThrowableMessage(message, throwable));
-    }
-    if (logLevel <= LOG_LEVEL_INFO) {
+    } else if (logLevel <= LOG_LEVEL_INFO) {
       android.util.Log.i(tag, message, throwable);
     }
   }
@@ -122,8 +120,7 @@ public final class Log {
   public static void w(String tag, String message, @Nullable Throwable throwable) {
     if (!logStackTraces) {
       w(tag, appendThrowableMessage(message, throwable));
-    }
-    if (logLevel <= LOG_LEVEL_WARNING) {
+    } else if (logLevel <= LOG_LEVEL_WARNING) {
       android.util.Log.w(tag, message, throwable);
     }
   }
@@ -139,8 +136,7 @@ public final class Log {
   public static void e(String tag, String message, @Nullable Throwable throwable) {
     if (!logStackTraces) {
       e(tag, appendThrowableMessage(message, throwable));
-    }
-    if (logLevel <= LOG_LEVEL_ERROR) {
+    } else if (logLevel <= LOG_LEVEL_ERROR) {
       android.util.Log.e(tag, message, throwable);
     }
   }