Fix some static analaysis warnings.

miniaudio.h

@@ -42431,7 +42431,6 @@ MA_API ma_result ma_rb_seek_read(ma_rb* pRB, size_t offsetInBytes)
     writeOffset = pRB->encodedWriteOffset;
     ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);
 
-    newReadOffsetInBytes = readOffsetInBytes;
     newReadOffsetLoopFlag = readOffsetLoopFlag;
 
     /* We cannot go past the write buffer. */
@@ -42476,7 +42475,6 @@ MA_API ma_result ma_rb_seek_write(ma_rb* pRB, size_t offsetInBytes)
     writeOffset = pRB->encodedWriteOffset;
     ma_rb__deconstruct_offset(writeOffset, &writeOffsetInBytes, &writeOffsetLoopFlag);
 
-    newWriteOffsetInBytes = writeOffsetInBytes;
     newWriteOffsetLoopFlag = writeOffsetLoopFlag;
 
     /* We cannot go past the write buffer. */

tests/test_cpp/ma_test_cpp.cpp

-#include "../test_deviceio/ma_test_deviceio.c"
+//#include "../test_deviceio/ma_test_deviceio.c"
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+
+//#define MA_DEBUG_OUTPUT
+#define MINIAUDIO_IMPLEMENTATION
+#include "../../miniaudio.h"
+
+void data_callback(ma_device* pDevice, void* pOutput, const void* pInput, ma_uint32 frameCount)
+{
+}
+
+int main(int argc, char** argv)
+{
+    ma_result result;
+    ma_device_config deviceConfig;
+    ma_device device;
+    ma_backend backend = ma_backend_null;
+    for(int i=0;i<1000;++i){
+        deviceConfig = ma_device_config_init(ma_device_type_playback);
+        deviceConfig.playback.format   = ma_format_f32;
+        deviceConfig.playback.channels = 2;
+        deviceConfig.sampleRate        = 44100;
+        deviceConfig.dataCallback      = data_callback;
+        deviceConfig.pUserData         = NULL;
+        printf("iter: %d\n", i);
+        printf("init\n");
+        if (ma_device_init_ex(&backend, 1, NULL, &deviceConfig, &device) != MA_SUCCESS) {
+            printf("Failed to open playback device.\n");
+            return -1;
+        }
+        printf("start\n");
+        if (ma_device_start(&device) != MA_SUCCESS) {
+            printf("Failed to start playback device.\n");
+            ma_device_uninit(&device);
+            return -1;
+        }
+        printf("uninit\n");
+        ma_device_uninit(&device);
+    }
+    return 0;
+}
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