bug 7368 : os.environ['http_proxy'] gives an error if http_proxy is not set.
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		@@ -188,16 +188,16 @@ class osmGpsMap():
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                             constants.map_title[map_type])
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					                             constants.map_title[map_type])
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        config.set("geography.map_service", map_type)
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					        config.set("geography.map_service", map_type)
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        self.current_map = map_type
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					        self.current_map = map_type
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        http_proxy = os.environ['http_proxy']
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					        http_proxy = os.environ.get('http_proxy')
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        if 0:
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					        if 0:
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            self.osm = DummyMapNoGpsPoint()
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					            self.osm = DummyMapNoGpsPoint()
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        else:
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					        else:
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            if http_proxy == "":
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					            if http_proxy:
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                self.osm = osmgpsmap.GpsMap(tile_cache=tiles_path,
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					                self.osm = osmgpsmap.GpsMap(tile_cache=tiles_path,
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					                                            proxy_uri=http_proxy,
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                                            map_source=constants.map_type[map_type])
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					                                            map_source=constants.map_type[map_type])
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            else:
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					            else:
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                self.osm = osmgpsmap.GpsMap(tile_cache=tiles_path,
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					                self.osm = osmgpsmap.GpsMap(tile_cache=tiles_path,
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                                            proxy_uri=http_proxy,
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                                            map_source=constants.map_type[map_type])
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					                                            map_source=constants.map_type[map_type])
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        current_map = osmgpsmap.GpsMapOsd( show_dpad=False, show_zoom=True)
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					        current_map = osmgpsmap.GpsMapOsd( show_dpad=False, show_zoom=True)
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        self.end_selection = None
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					        self.end_selection = None
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