OpenCL runtime environment is no longer required with --keyspace option

src/oclHashcat.c

@@ -12485,6 +12485,8 @@ int main (int argc, char **argv)
 
     cl_uint platform_devices_cnt;
 
+    if (keyspace == 0) // matrix
+    {
       hc_clGetPlatformIDs (CL_PLATFORMS_MAX, platforms, &platforms_cnt);
 
       if (platforms_cnt == 0)
@@ -12493,6 +12495,7 @@ int main (int argc, char **argv)
 
         return (-1);
       }
+    }
 
     /**
      * OpenCL platforms: For each platform check if we need to unset features that we can not use, eg: temp_retain
@@ -12858,7 +12861,7 @@ int main (int argc, char **argv)
       }
     }
 
-    if (devices_active == 0)
+    if (keyspace == 0 && devices_active == 0)
     {
       log_error ("ERROR: No devices found/left");