Don't ask GLX for EGL procs.

src/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp

Index: src/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp
diff --git a/src/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp b/src/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp
index e3d37bd80f1efeeab81da681bab29797e4cd186c..4a204123e186ecd5cdadd714892cb3d8fe8af7b1 100644
--- a/src/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp
+++ b/src/gpu/gl/glx/GrGLCreateNativeInterface_glx.cpp
@@ -13,6 +13,12 @@
 #include <GL/glx.h>
 
 static GrGLFuncPtr glx_get(void* ctx, const char name[]) {
+    // Avoid calling glXGetProcAddress() for EGL procs.
+    // We don't expect it to ever succeed, but somtimes it returns non-null anyway.
+    if (0 == strncmp(name, "egl", 3)) {
+        return nullptr;
+    }
+
     SkASSERT(nullptr == ctx);
     SkASSERT(glXGetCurrentContext());
     return glXGetProcAddress(reinterpret_cast<const GLubyte*>(name));