[introspection] Make scanner happy with HB_EXTERN

diff --git a/src/Makefile.am b/src/Makefile.am
index fe14287..ec55656 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -419,6 +419,7 @@ HarfBuzz_0_0_gir_CFLAGS = \
        -DHB_OT_H_IN \
        -DHB_GOBJECT_H \
        -DHB_GOBJECT_H_IN \
+       -DHB_EXTERN= \
        $(NULL)
 HarfBuzz_0_0_gir_LIBS = \
        libharfbuzz.la \