Add GL_STRUCT_ANGLEX case handling to the variable row and column count methods.

TRAC #23749

Signed-off-by: Nicolas Capens
diff --git a/src/common/utilities.cpp b/src/common/utilities.cpp
index f0aea9d..b857075 100644
--- a/src/common/utilities.cpp
+++ b/src/common/utilities.cpp
@@ -186,6 +186,7 @@
     switch (type)
     {
       case GL_NONE:
+      case GL_STRUCT_ANGLEX:
         return 0;
       case GL_BOOL:
       case GL_FLOAT:
@@ -243,6 +244,7 @@
     switch (type)
     {
       case GL_NONE:
+      case GL_STRUCT_ANGLEX:
         return 0;
       case GL_BOOL:
       case GL_FLOAT: