Fix refcounting bugs

src/core/ext/transport/chttp2/transport/frame_data.c

@@ -56,6 +56,7 @@ void grpc_chttp2_data_parser_destroy(grpc_exec_ctx *exec_ctx,
         exec_ctx, parser->parsing_frame, GRPC_ERROR_CREATE("Parser destroyed"),
         1);
   }
+  GRPC_ERROR_UNREF(parser->error);
 }
 
 grpc_error *grpc_chttp2_data_parser_begin_frame(grpc_chttp2_data_parser *parser,

src/core/ext/transport/chttp2/transport/parsing.c

@@ -444,7 +444,7 @@ static grpc_error *init_data_frame_parser(
   } else if (grpc_error_get_int(err, GRPC_ERROR_INT_STREAM_ID, NULL)) {
     /* handle stream errors by closing the stream */
     grpc_chttp2_mark_stream_closed(exec_ctx, transport_global, stream_global,
-                                   true, false, GRPC_ERROR_REF(err));
+                                   true, false, err);
     gpr_slice_buffer_add(
         &transport_global->qbuf,
         grpc_chttp2_rst_stream_create(transport_global->incoming_stream_id,

src/core/lib/iomgr/error.h

@@ -148,7 +148,7 @@ grpc_error *grpc_error_create(const char *file, int line, const char *desc,
 #define GRPC_ERROR_CREATE_REFERENCING(desc, errs, count) \
   grpc_error_create(__FILE__, __LINE__, desc, errs, count)
 
-//#define GRPC_ERROR_REFCOUNT_DEBUG
+#define GRPC_ERROR_REFCOUNT_DEBUG
 #ifdef GRPC_ERROR_REFCOUNT_DEBUG
 grpc_error *grpc_error_ref(grpc_error *err, const char *file, int line,
                            const char *func);

src/core/lib/transport/transport.h

@@ -55,7 +55,7 @@ typedef struct grpc_transport grpc_transport;
    for a stream. */
 typedef struct grpc_stream grpc_stream;
 
-#define GRPC_STREAM_REFCOUNT_DEBUG
+//#define GRPC_STREAM_REFCOUNT_DEBUG
 
 typedef struct grpc_stream_refcount {
   gpr_refcount refs;