fix warnings treated as errors on line 94 and 97 that are allowed on try serv...

media/tools/qt-faststart.c

 /*
  * qt-faststart.c, v0.2
  * by Mike Melanson (melanson@pcisys.net)
  * patch by Frank Barchard, to remove last FREE atom.
  * This file is placed in the public domain. Use the program however you
  * see fit.
  *
  * This utility rearranges a Quicktime file such that the moov atom
  * is in front of the data, thus facilitating network streaming.
  *
@@ skipping 73 matching lines @@
 #define ATOM_PREAMBLE_SIZE 8
 #define COPY_BUFFER_SIZE 1024
 
 int main(int argc, char *argv[])
 {
     FILE *infile = 0;
     FILE *outfile = 0;
     unsigned char atom_bytes[ATOM_PREAMBLE_SIZE];
     uint32_t atom_type = 0;
     uint64_t atom_size = 0;
-    uint64_t last_offset;
+    uint64_t last_offset = 0;  // warning: 'last_offset' may be used uninitialized in this function
     unsigned char *moov_atom = 0;
     unsigned char *ftyp_atom = 0;
-    uint64_t moov_atom_size;
+    uint64_t moov_atom_size = 0;  // warning: 'moov_atom_size' may be used uninitialized in this function
     uint64_t ftyp_atom_size = 0;
     uint64_t i, j;
     uint32_t offset_count;
     uint64_t current_offset;
     uint64_t start_offset = 0;
     unsigned char copy_buffer[COPY_BUFFER_SIZE];
     int bytes_to_copy;
     uint32_t last_atom_type = 0;
     uint64_t last_atom_size = 0;
     uint64_t last_atom_offset = 0;
@@ skipping 209 matching lines @@
     if (infile)
         fclose(infile);
     if (outfile)
         fclose(outfile);
     if (moov_atom)
         free(moov_atom);
     if (ftyp_atom)
         free(ftyp_atom);
     return return_code;
 }