bpfc: make verbose parameter boolean

Verbose mode is a boolean option, so make the variable and parameters
carrying it of type bool.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

bpf_parser.y

@@ -27,7 +27,7 @@
 #include "die.h"
 #include "cpp.h"
 
-int compile_filter(char *file, int verbose, int bypass, int format,
+int compile_filter(char *file, bool verbose, int bypass, int format,
 		   bool invoke_cpp, char *const cpp_argv[]);
 
 static int curr_instr = 0;
@@ -734,7 +734,7 @@ static void pretty_printer(const struct sock_fprog *prog, int format)
 	}
 }
 
-int compile_filter(char *file, int verbose, int bypass, int format,
+int compile_filter(char *file, bool verbose, int bypass, int format,
 		   bool invoke_cpp, char *const cpp_argv[])
 {
 	int i;

bpfc.c

@@ -40,7 +40,7 @@ static const char *copyright = "Please report bugs to <netsniff-ng@googlegroups.
 	"This is free software: you are free to change and redistribute it.\n"
 	"There is NO WARRANTY, to the extent permitted by law.";
 
-extern int compile_filter(char *file, int verbose, int bypass, int format,
+extern int compile_filter(char *file, bool verbose, int bypass, int format,
 			  bool invoke_cpp, char **cpp_argv);
 
 static void __noreturn help(void)
@@ -82,8 +82,8 @@ static void __noreturn version(void)
 
 int main(int argc, char **argv)
 {
-	int ret, verbose = 0, c, bypass = 0, format = 0;
-	bool invoke_cpp = false;
+	int ret, c, bypass = 0, format = 0;
+	bool verbose = false, invoke_cpp = false;
 	char **cpp_argv = NULL;
 	size_t cpp_argc = 0;
 	char *file = NULL;
@@ -104,7 +104,7 @@ int main(int argc, char **argv)
 			version();
 			break;
 		case 'V':
-			verbose = 1;
+			verbose = true;
 			break;
 		case 'p':
 			invoke_cpp = true;