treewide: no need to negate errno for log_*_errno()

It corrrectly handles both positive and negative errno values.

src/test/test-boot-timestamps.c

@@ -37,7 +37,7 @@ static int test_acpi_fpdt(void) {
         r = acpi_get_boot_usec(&loader_start, &loader_exit);
         if (r < 0) {
                 if (r != -ENOENT)
-                        log_error_errno(-r, "Failed to read ACPI FPDT: %m");
+                        log_error_errno(r, "Failed to read ACPI FPDT: %m");
                 return r;
         }
 
@@ -60,7 +60,7 @@ static int test_efi_loader(void) {
         r = efi_loader_get_boot_usec(&loader_start, &loader_exit);
         if (r < 0) {
                 if (r != -ENOENT)
-                        log_error_errno(-r, "Failed to read EFI loader data: %m");
+                        log_error_errno(r, "Failed to read EFI loader data: %m");
                 return r;
         }
 
@@ -84,7 +84,7 @@ int main(int argc, char* argv[]) {
 
         r = boot_timestamps(NULL, &fw, &l);
         if (r < 0) {
-                log_error_errno(-r, "Failed to read variables: %m");
+                log_error_errno(r, "Failed to read variables: %m");
                 return 1;
         }
 

src/test/test-hostname.c

@@ -32,7 +32,7 @@ int main(int argc, char* argv[]) {
 
         r = hostname_setup();
         if (r < 0)
-                log_error_errno(-r, "hostname: %m");
+                log_error_errno(r, "hostname: %m");
 
         return 0;
 }

src/test/test-ns.c

@@ -65,7 +65,7 @@ int main(int argc, char *argv[]) {
                             PROTECT_SYSTEM_NO,
                             0);
         if (r < 0) {
-                log_error_errno(-r, "Failed to setup namespace: %m");
+                log_error_errno(r, "Failed to setup namespace: %m");
                 return 1;
         }
 

src/test/test-socket-util.c

@@ -258,7 +258,7 @@ static void test_nameinfo_pretty(void) {
 
         _cleanup_close_ int sfd = -1, cfd = -1;
         r = getnameinfo_pretty(STDIN_FILENO, &stdin_name);
-        log_info_errno(-r, "No connection remote: %m");
+        log_info_errno(r, "No connection remote: %m");
 
         assert_se(r < 0);
 

src/test/test-watchdog.c

@@ -35,13 +35,13 @@ int main(int argc, char *argv[]) {
 
         r = watchdog_set_timeout(&t);
         if (r < 0)
-                log_warning_errno(-r, "Failed to open watchdog: %m");
+                log_warning_errno(r, "Failed to open watchdog: %m");
 
         for (i = 0; i < 5; i++) {
                 log_info("Pinging...");
                 r = watchdog_ping();
                 if (r < 0)
-                        log_warning_errno(-r, "Failed to ping watchdog: %m");
+                        log_warning_errno(r, "Failed to ping watchdog: %m");
 
                 usleep(t/2);
         }