submodule update

diff --git a/pico/cd/libchdr b/pico/cd/libchdr
index 00319cf..e8ec350 160000 (submodule)
--- a/pico/cd/libchdr
+++ b/pico/cd/libchdr
@@ -1 +1 @@
-Subproject commit 00319cf31f034e4d468a49a60265c7c5b8305b70
+Subproject commit e8ec3507e876b4a5b71af0dce705e13732d843c4

diff --git a/pico/sound/emu2413 b/pico/sound/emu2413
index 9f1dcf8..4062e93 160000 (submodule)
--- a/pico/sound/emu2413
+++ b/pico/sound/emu2413
@@ -1 +1 @@
-Subproject commit 9f1dcf848d0e33e775e49352f7bc83a9c0e87a81
+Subproject commit 4062e93e9316ee5c488167ade5a83753e5f07ae3

diff --git a/platform/common/dr_libs b/platform/common/dr_libs
index 343aa92..1e42667 160000 (submodule)
--- a/platform/common/dr_libs
+++ b/platform/common/dr_libs
@@ -1 +1 @@
-Subproject commit 343aa923439e59e7a9f7726f70edc77a4500bdec
+Subproject commit 1e42667b0912437d1c101a59ee9d0225ba0dffb5