Global: fix other possible bugs where enumerating directories without ignoring . and ..

src/detection/battery/battery_linux.c

@@ -99,6 +99,9 @@ const char* ffDetectBatteryImpl(FFinstance* instance, FFlist* results) {
     struct dirent* entry;
     while((entry = readdir(dirp)) != NULL)
     {
+        if(strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+            continue;
+
         ffStrbufAppendS(&baseDir, entry->d_name);
         parseBattery(&baseDir, results);
         ffStrbufSubstrBefore(&baseDir, baseDirLength);

src/detection/displayserver/linux/displayserver_linux.c

@@ -73,6 +73,9 @@ static void parseDRM(FFDisplayServerResult* result)
     struct dirent* entry;
     while((entry = readdir(dirp)) != NULL)
     {
+        if(strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+            continue;
+
         ffStrbufAppendS(&drmDir, entry->d_name);
         ffStrbufAppendS(&drmDir, "/modes");
 

src/detection/packages/packages_linux.c

@@ -309,6 +309,8 @@ static void getPackageCountsBedrock(const FFinstance* instance, FFstrbuf* baseDi
     {
         if(entry->d_type != DT_DIR)
             continue;
+        if(strcmp(entry->d_name, ".") == 0 || strcmp(entry->d_name, "..") == 0)
+            continue;
 
         ffStrbufAppendS(baseDir, entry->d_name);
         getPackageCounts(instance, baseDir, packageCounts);