StagefrightMediaScanner: Call endFile() for MIDI and OGG files.

addStringTag() caches non-ascii metadata strings for later
processing, and then endFile() will be called at the end of
processFile() to convert non-ascii strings from locale's charset
to utf-8 if required.

Stagefright's processFile() failed to call endFile() when the
processing file is a MIDI file or an OGG file.  This patch fixes
this problem to populate metadata correctly.

Reviewed by: Brad Fitzpatrick, Marco Nelissen.

Change-Id: I072e79d81dce1fec63297d2b5d2b870a72e5b66e

Author: sina-ht

media/libstagefright/StagefrightMediaScanner.cpp

@@ -172,14 +172,16 @@ status_t StagefrightMediaScanner::processFile(
             || !strcasecmp(extension, ".rtttl")
             || !strcasecmp(extension, ".rtx")
             || !strcasecmp(extension, ".ota")) {
-        return HandleMIDI(path, &client);
-    }
-
-    if (!strcasecmp(extension, ".ogg")) {
-        return HandleOGG(path, &client);
-    }
-
-    if (mRetriever->setDataSource(path) == OK
+        status_t status = HandleMIDI(path, &client);
+        if (status != OK) {
+            return status;
+        }
+    } else if (!strcasecmp(extension, ".ogg")) {
+        status_t status = HandleOGG(path, &client);
+        if (status != OK) {
+            return status;
+        }
+    } else if (mRetriever->setDataSource(path) == OK
             && mRetriever->setMode(
                 METADATA_MODE_METADATA_RETRIEVAL_ONLY) == OK) {
         const char *value;