[PATCH 4.4 50/78] isdn: kcapi: avoid uninitialized data

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Arnd Bergmann [ Upstream commit af109a2cf6a9a6271fa420ae2d64d72d86c92b7d ] gcc-7 points out that the AVMB1_ADDCARD ioctl results in an unintialized value ending up in the

[PATCH 4.4 50/78] isdn: kcapi: avoid uninitialized data

4.4-stable review patch. If anyone has any objections, please let me know. -- From: Arnd Bergmann [ Upstream commit af109a2cf6a9a6271fa420ae2d64d72d86c92b7d ] gcc-7 points out that the AVMB1_ADDCARD ioctl results in an unintialized value ending up in the cardnr parameter: