build: Remove use of the obsolete AC_TYPE_SIGNAL macro
C89 compilers use void return type for signal handler functions.
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@ -177,7 +177,6 @@ dnl Checks for types
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dnl
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AC_TYPE_SIZE_T
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AC_TYPE_PID_T
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AC_TYPE_SIGNAL
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AC_UNP_CHECK_TYPE(uint8_t, unsigned char)
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AC_UNP_CHECK_TYPE(int16_t, short)
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AC_UNP_CHECK_TYPE(uint16_t, unsigned short)
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@ -51,7 +51,7 @@ unsigned int processed_config_file = FALSE; /* boolean */
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/*
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* Handle a signal
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*/
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static RETSIGTYPE
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static void
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takesig (int sig)
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{
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pid_t pid;
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