fsindexer: avoid generating an empty bogus document when getting a subdoc error after the base doc has been seen

src/index/fsindexer.cpp

@@ -726,6 +726,11 @@ FsIndexer::processonefile(RclConfig *config,
 	    // We'll change the signature to ensure that the indexing will
 	    // be retried every time.
             
+            // If there is an error and the base doc was already seen,
+            // we're done
+            if (fis == FileInterner::FIError && hadNullIpath)
+		return FsTreeWalker::FtwOk;
+
 	    // Internal access path for multi-document files. If empty, this is
 	    // for the main file.
 	    if (doc.ipath.empty()) {