Fix gocryptfs_jni.c invalid string access
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@ -196,6 +196,7 @@ Java_sushi_hardcore_droidfs_filesystems_GocryptfsVolume_native_1list_1dir(JNIEnv
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jint sessionID, jstring jplain_dir) {
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const char* plain_dir = (*env)->GetStringUTFChars(env, jplain_dir, NULL);
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const size_t plain_dir_len = strlen(plain_dir);
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const char append_slash = plain_dir[plain_dir_len-1] != '/';
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GoString go_plain_dir = {plain_dir, plain_dir_len};
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struct gcf_list_dir_return elements = gcf_list_dir(sessionID, go_plain_dir);
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@ -216,7 +217,7 @@ Java_sushi_hardcore_droidfs_filesystems_GocryptfsVolume_native_1list_1dir(JNIEnv
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char* fullPath = malloc(sizeof(char) * (plain_dir_len + nameLen + 2));
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strcpy(fullPath, plain_dir);
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if (plain_dir[-2] != '/') {
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if (append_slash) {
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strcat(fullPath, "/");
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}
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strcat(fullPath, name);
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