egl: move alloc & init out of _eglBuiltInDriver{DRI2,Haiku}

This is a revert of Marek's 84f3afc2e122cb418573 revert, with a missing
line added back. I failed a rebase and dropped that crucial line, and
didn't do a runtime test after my rebase, and as a result broke EGL for
everyone.
This commit has been tested by Intel's CI and I re-read it once more, so
it should be good this time.
--

Note: dropping the EGL_BAD_ALLOC in egl_haiku because it's
overwritten by the EGL_NOT_INITIALIZED in eglInitialize().

Signed-off-by: Eric Engestrom <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>

1 files changed, 7 insertions, 2 deletions

diff --git a/src/egl/main/egldriver.c b/src/egl/main/egldriver.c
index 218b3daef25..3fe37f1641c 100644
--- a/src/egl/main/egldriver.c
+++ b/src/egl/main/egldriver.c
@@ -54,8 +54,13 @@ _eglGetDriver(void)
 {
    mtx_lock(&_eglModuleMutex);
 
-   if (!_eglDriver)
-      _eglDriver = _eglBuiltInDriver();
+   if (!_eglDriver) {
+      _eglDriver = calloc(1, sizeof(*_eglDriver));
+      if (!_eglDriver)
+         return NULL;
+      _eglInitDriverFallbacks(_eglDriver);
+      _eglInitDriver(_eglDriver);
+   }
 
    mtx_unlock(&_eglModuleMutex);