correctly handle filter file loading error, small tweak

filters_main.inc.h

@@ -496,10 +496,12 @@ static void filters_prepare(void)
 #endif
 }
 
-static void loadfilterfile(const char *fname)
+static bool loadfilterfile(const char *fname)
 {
 	char buf[128];
 	FILE *f = fopen(fname,"r");
+	if (!f)
+		return false;
 	while (fgets(buf,sizeof(buf),f)) {
 		for (char *p = buf;*p;++p) {
 			if (*p == '\n') {
@@ -510,4 +512,5 @@ static void loadfilterfile(const char *fname)
 		if (*buf && *buf != '#' && memcmp(buf,"//",2) != 0)
 			filters_add(buf);
 	}
+	return true;
 }

ioutil.c

@@ -95,6 +95,7 @@ int closefile(FH fd)
 int createdir(const char *path,int secret)
 {
 	// XXX don't know how to handle secret argument
+	(void) secret;
 	return CreateDirectoryA(path,0) ? 0 : -1;
 }
 

main.c

@@ -3,6 +3,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <stdint.h>
+#include <stdbool.h>
 #include <string.h>
 #include <time.h>
 #include <pthread.h>
@@ -256,8 +257,13 @@ int main(int argc,char **argv)
 				exit(0);
 			}
 			else if (*arg == 'f') {
-				if (argc--)
-					loadfilterfile(*argv++);
+				if (argc--) {
+					const char *filename = *argv++;
+					if (!loadfilterfile(filename)) {
+						fprintf(stderr,"failed to load filter file %s\n",filename);
+						exit(1);
+					}
+				}
 				else
 					e_additional();
 			}