egl: initialise dummy_thread via _eglInitThreadInfo

Considering we cannot make dummy_thread a constant we might as well,
initialise by the same function that handles the actual thread info.

This way we don't need to worry about mismatch between the initialiser
and initialising function.

Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>

src/egl/main/eglcurrent.c

@@ -37,12 +37,8 @@
 #include "eglcurrent.h"
 #include "eglglobals.h"
 
-/* This should be kept in sync with _eglInitThreadInfo() */
-#define _EGL_THREAD_INFO_INITIALIZER \
-   { EGL_SUCCESS, NULL, EGL_OPENGL_ES_API, NULL, NULL, NULL }
-
 /* a fallback thread info to guarantee that every thread always has one */
-static _EGLThreadInfo dummy_thread = _EGL_THREAD_INFO_INITIALIZER;
+static _EGLThreadInfo dummy_thread;
 static mtx_t _egl_TSDMutex = _MTX_INITIALIZER_NP;
 static EGLBoolean _egl_TSDInitialized;
 static tss_t _egl_TSD;
@@ -109,7 +105,6 @@ static inline EGLBoolean _eglInitTSD(void (*dtor)(_EGLThreadInfo *))
 static void
 _eglInitThreadInfo(_EGLThreadInfo *t)
 {
-   memset(t, 0, sizeof(*t));
    t->LastError = EGL_SUCCESS;
    /* default, per EGL spec */
    t->CurrentAPI = EGL_OPENGL_ES_API;
@@ -123,10 +118,10 @@ static _EGLThreadInfo *
 _eglCreateThreadInfo(void)
 {
    _EGLThreadInfo *t = calloc(1, sizeof(_EGLThreadInfo));
-   if (t)
-      _eglInitThreadInfo(t);
-   else
+   if (!t)
       t = &dummy_thread;
+
+   _eglInitThreadInfo(t);
    return t;
 }