Bug 632344 - Fix bustage.

configure.in

@@ -9308,7 +9308,7 @@ if test "$USE_FC_FREETYPE"; then
     if test "$COMPILE_ENVIRONMENT"; then
     	_SAVE_CPPFLAGS="$CPPFLAGS"
     	CPPFLAGS="$CPPFLAGS $FT2_CFLAGS $XCFLAGS"
-        MOZ_CHECK_HEADERS(fontconfig/fcfreetype.h, , 
+        AC_CHECK_HEADERS(fontconfig/fcfreetype.h, , 
             [AC_MSG_ERROR(Can't find header fontconfig/fcfreetype.h.)])
     	CPPFLAGS="$_SAVE_CPPFLAGS"
     else