Remove space in exception message.

This space was added by mistake in a prior CL of mine.

PiperOrigin-RevId: 510157363

libraries/transformer/src/main/java/androidx/media3/transformer/ExportException.java

@@ -264,7 +264,7 @@ public final class ExportException extends Exception {
    */
    */
   public static ExportException createForAudioProcessing(Throwable cause, AudioFormat audioFormat) {
   public static ExportException createForAudioProcessing(Throwable cause, AudioFormat audioFormat) {
     return new ExportException(
     return new ExportException(
-        "Audio processing error, audio_format = " + audioFormat,
+        "Audio processing error, audio_format=" + audioFormat,
         cause,
         cause,
         ERROR_CODE_AUDIO_PROCESSING_FAILED);
         ERROR_CODE_AUDIO_PROCESSING_FAILED);
   }
   }

libraries/transformer/src/main/java/androidx/media3/transformer/TransformationException.java

@@ -268,7 +268,7 @@ public final class TransformationException extends Exception {
   public static TransformationException createForAudioProcessing(
   public static TransformationException createForAudioProcessing(
       Throwable cause, AudioFormat audioFormat) {
       Throwable cause, AudioFormat audioFormat) {
     return new TransformationException(
     return new TransformationException(
-        "Audio processing error, audio_format = " + audioFormat,
+        "Audio processing error, audio_format=" + audioFormat,
         cause,
         cause,
         ERROR_CODE_AUDIO_PROCESSING_FAILED);
         ERROR_CODE_AUDIO_PROCESSING_FAILED);
   }
   }