1 files changed, 4 insertions, 2 deletions
diff --git a/extern/libmv/libmv/base/vector.h b/extern/libmv/libmv/base/vector.h
index 067db4ba7f7..1931fb0b1f9 100644
--- a/extern/libmv/libmv/base/vector.h
+++ b/extern/libmv/libmv/base/vector.h
@@ -101,8 +101,6 @@ class vector {
     size_ = size;
   }
 
-
-
   void push_back(const T &value) {
     if (size_ == capacity_) {
       reserve(size_ ? 2 * size_ : 1);
@@ -130,6 +128,10 @@ class vector {
     }
   }
 
+  bool empty() {
+    return size_ == 0;
+  }
+
  private:
   void construct(int start, int end) {
     for (int i = start; i < end; ++i) {