ibft: avoid logging multiple lines when ibft fails

In case of error, ibft prints an error message to stderr
with two trailing newlines. This causes multiple lines
in our logfile. Replace newlines in the error message
by whitespaces.

src/settings/plugins/ibft/reader.c

@@ -119,6 +119,15 @@ read_ibft_blocks (const char *iscsiadm_path,
 	}
 
 	if (WEXITSTATUS (status) != 0) {
+		if (err) {
+			char *nl;
+
+			/* the error message contains newlines. concatenate the lines with whitespace */
+			for (nl = err; *nl; nl++) {
+				if (*nl == '\n')
+					*nl = ' ';
+			}
+		}
 		g_set_error (error, NM_SETTINGS_ERROR, NM_SETTINGS_ERROR_FAILED,
 		             "iBFT: %s exited with error %d.  Message: '%s'",
 		             iscsiadm_path, WEXITSTATUS (status), err ? err : "(none)");