[indic] Adjust Javanese base algorithm

src/hb-ot-shape-complex-indic.cc

@@ -323,7 +323,7 @@ static const indic_config_t indic_configs[] =
   {HB_SCRIPT_SINHALA,	false,0x0DCA,BASE_POS_LAST_SINHALA,
 						    REPH_POS_AFTER_MAIN, REPH_MODE_EXPLICIT, BLWF_MODE_PRE_AND_POST, PREF_LEN_DONT_CARE},
   {HB_SCRIPT_KHMER,	false,0x17D2,BASE_POS_FIRST,REPH_POS_DONT_CARE,  REPH_MODE_VIS_REPHA,BLWF_MODE_PRE_AND_POST, PREF_LEN_2},
-  {HB_SCRIPT_JAVANESE,	false,0xA9C0,BASE_POS_LAST, REPH_POS_DONT_CARE,  REPH_MODE_VIS_REPHA,BLWF_MODE_PRE_AND_POST, PREF_LEN_1},
+  {HB_SCRIPT_JAVANESE,	false,0xA9C0,BASE_POS_FIRST,REPH_POS_DONT_CARE,  REPH_MODE_VIS_REPHA,BLWF_MODE_PRE_AND_POST, PREF_LEN_1},
 };