Fixed some compiler warnings

dcc6502.c

@@ -299,7 +299,7 @@ unsigned short max = 0xffff; /* Maximum number of bytes to disassemble */
 char line[512];
 
 /* This function emits a comment header with information about the file
-            being disassembled */
+   being disassembled */
 
 void emit_header(char *filename, int fsize, unsigned short org) {
     fprintf(stdout, "; Source generated by DCC6502 version %s\n", VERSION_INFO);
@@ -376,7 +376,7 @@ void disassemble(char *output) {
 
     char tmpstr[256], tmpstr2[256], tmpstr3[256];
 
-    int i, j, entry, found = 0;
+    int i, entry, found = 0;
 
     opcode = buffer[PC];
 
@@ -718,7 +718,6 @@ void set_max(char *str) {
 
 int main(int argc, char *argv[]) {
     int i = 0;
-    char c;
     char tmpstring[512];
     char filename[512];