comparison layer/Colour3DPlotLayer.cpp @ 843:db0759e4c6c3

Fix some (probably benign) uninitialised members (from coverity scan)

 }
 
 void
 Colour3DPlotLayer::cacheInvalid(int startFrame, int endFrame)
 {
-    if (!m_cache) return;
+    if (!m_cache || !m_model) return;
 
     int modelResolution = m_model->getResolution();
     int start = startFrame / modelResolution;
     int end = endFrame / modelResolution + 1;
     if (m_cacheValidStart < end) m_cacheValidStart = end;

                 float sx0 = sxa[x*2];
                 if (sx0 < 0) continue;
                 int sx0i = int(sx0 + epsilon);
                 if (sx0i >= sw) break;
 
-                float a, b, value;
+                float a = float(sourceLine[sx0i]);
+                float b = a;
+                float value;
 
                 float sx1 = sxa[x*2+1];
                 if (sx1 > sx0 + 1.f) {
                     int sx1i = int(sx1);
                     bool have = false;