Use snprintf (instead of sprintf)

[PoeticPete]

snprintf is safer than sprintf. This change replaces all instances of sprintf with snprintf.

Tests pass

ctest -C Debug -j
Test project /Users/petertao/Desktop/fb/uncrustify/build
      Start  3: cpp
      Start 12: sources_format
      Start  2: c
      Start  8: objective-c
      Start  4: d
      Start  1: c-sharp
      Start  7: java
      Start  9: pawn
      Start 10: vala
      Start 13: cli_options
      Start 11: staging
      Start  5: ecma
      Start  6: imported
      Start 14: sanity
 1/14 Test #14: sanity ...........................   Passed    0.01 sec
 2/14 Test  #6: imported .........................   Passed    0.08 sec
 3/14 Test  #5: ecma .............................   Passed    0.25 sec
 4/14 Test #11: staging ..........................   Passed    0.77 sec
 5/14 Test #13: cli_options ......................   Passed    1.02 sec
 6/14 Test #10: vala .............................   Passed    4.41 sec
 7/14 Test  #9: pawn .............................   Passed    4.86 sec
 8/14 Test  #7: java .............................   Passed    7.68 sec
 9/14 Test  #1: c-sharp ..........................   Passed   21.47 sec
10/14 Test  #4: d ................................   Passed   40.15 sec
11/14 Test  #8: objective-c ......................   Passed   40.25 sec
12/14 Test #12: sources_format ...................   Passed   87.80 sec
13/14 Test  #2: c ................................   Passed   88.84 sec
14/14 Test  #3: cpp ..............................   Passed  133.27 sec

100% tests passed, 0 tests failed out of 14

Total Test time (real) = 133.30 sec

[micheleCTDEAdmin]

Looks good, thanks @PoeticPete