catalyst_api: handle the last path entry in the envvar

The last path entry is terminated by pathsep getting to the end of the string which leaves the loop without checking if curpath has been handled.

Fixes: #10 (closed)

src/catalyst/catalyst_api.c

@@ -74,6 +74,7 @@ static catalyst_handle_t handle_from_env(const char* impl_name)
           handle = handle_open(curpath, impl_name);
           if (handle_is_valid(handle))
           {
+            curpath = NULL;
             break;
           }
         }
@@ -84,6 +85,11 @@ static catalyst_handle_t handle_from_env(const char* impl_name)
           curpath = pathsep;
         }
       }
+
+      if (!handle_is_valid(handle) && curpath)
+      {
+        handle = handle_open(curpath, impl_name);
+      }
     }
 
     free(paths);