By Marek Strzelecki and Miranda Murray WARSAW (Reuters) – Germany said on Wednesday it was receiving less oil but still had adequate supplies, after Poland found a leak in the Druzhba pipeline that delivers crude from Russia to Europe that Warsaw said was probably caused by an accident rather than sabotage. The discovery of the leak in the main route carrying oil to Germany, which operator PERN said it found on Tuesday evening, comes as Europe is on high alert over its energy security in the aftermath of Moscow’s invasion of Ukraine which has cut supplies of gas. Drone footage showed a black s…