: Fix compilation errors with gcc 7.2.1 for hsa runtime.

Change-Id: I3356388753ca78cc0f1e0c3188220d7f3f60283d


[ROCm/ROCR-Runtime commit: b913795c31]

projects/rocr-runtime/runtime/hsa-runtime/core/runtime/hsa.cpp

@@ -376,7 +376,7 @@ static size_t get_extension_table_length(uint16_t extension, uint16_t major, uin
       return 0;
   }
 
-  char buff[3];
+  char buff[6];
   sprintf(buff, "%02u", minor);
   name += std::to_string(major) + "_" + buff + "_pfn_t";