libmm-glib,helpers: use locale-independent strtod()
Otherwise parsing may fail, e.g. as in this unit test:
# Start of smoni tests
# DEBUG: testing SMONI response: ^SMONI: 2G,71,-61,262,02,0143,83BA,33,33,3,6,G,NOCONN
# DEBUG: testing SMONI response: ^SMONI: 2G,SEARCH,SEARCH
# DEBUG: testing SMONI response: ^SMONI: 2G,673,-89,262,07,4EED,A500,16,16,7,4,G,5,-107,LIMSRV
# DEBUG: testing SMONI response: ^SMONI: 2G,673,-80,262,07,4EED,A500,35,35,7,4,G,643,4,0,-80,0,S_FR
# DEBUG: testing SMONI response: ^SMONI: 3G,10564,296,-7.5,-79,262,02,0143,00228FF,-92,-78,NOCONN
**
ERROR:cinterion/tests/test-modem-helpers-cinterion.c:1036:test_smoni_response: assertion failed (fabs (ecn0 - smoni_response_tests[i].ecn0) < 0.1): (0,5 < 0,1)
Bail out! ERROR:cinterion/tests/test-modem-helpers-cinterion.c:1036:test_smoni_response: assertion failed (fabs (ecn0 - smoni_response_tests[i].ecn0) < 0.1): (0,5 < 0,1)
Aborted (core dumped)
Aleksander Morgado
8bf1329481