Use g_try_malloc() instead of g_malloc()

[Aleksander Morgado]

g_malloc() and g_malloc0() are used everywhere, and in the code, return value of the functions is always checked against NULL. The problem is that those functions will never return NULL: if no memory is available for allocation, they call g_error() internally and thus, SIGABRT.

Use g_try_malloc() and g_try_malloc0() instead, which will return NULL if memory allocation fails, and will not abort the execution of the program.

[Aleksander Morgado (aleksander-m)]

Fixed in trunk.